Tag Archives: cannabidiol

May 30, 2023

A Research Study on the Antimicrobial Properties of Cannabis

By Cindy Orser, PhD

Inexpensive in vitro Methods to Evaluate the Impact of Cannabinoid-containing Products on Sentinel Lactobacillus spp.

S. Lewin ¹, A. Hilyard², H. Piscatelli¹, A. Hangman¹, D. Petrik¹, P. Miles², and C. Orser²

¹MatMaCorp Inc, Lincoln NE; ²Apothercare LLC, Boston MA

Abstract

The public has readily embraced cannabidiol (CBD) in countless unregulated products that benefit from commercial promotion without FDA oversight, who recently concluded: “that a new regulatory pathway for CBD is needed that balances individuals’ desire for access to CBD products w/ the regulatory oversight is needed to manage risks.”¹ The reported antimicrobial properties of CBD combined with the recent proliferation of cannabinoid-containing products marketed to women for intimate care led us to explore the impact on the sentinel lactobacilli species associated with a healthy reproductive tract. Except for lubricants and tampons, the FDA regulates intimate care products as cosmetics. Even non-cannabis serums, washes, and suppositories are not required to be tested for their effect on the reproductive microbiota. We aimed to investigate the utility of easy-to-use, inexpensive in vitro assays for testing exogenous cannabis products on reproductive microbiota. In vitro assays can provide important evidence-based data to inform both manufacturers choosing both an active cannabinoid ingredient source as well as excipient chemicals and consumers in the absence of safety or quality data. In simple, straightforward exposure studies, we examined the antimicrobial activity of CBD and cannabigerol (CBG) on the most dominant vaginal lactobacilli species, L. crispatus, associated with good health.

Introduction

The testing of readily available products containing cannabinoids, predominately CBD following the widespread legalization of hemp by the 2018 US Farm Bill, is not required beyond ensuring THC content is below 0.3%. Therefore, basic information on safety, quality, antimicrobial activity, bioavailability, and dosing is unavailable and undocumented. The situation is further complicated by the complex chemoprofiles of cannabis extracts based on the cultivar, the extraction methods and subsequent cleanup, and other chemical excipients in the formulation. The FDA has finalized guidance on quality considerations for clinical research for the development of cannabis and cannabis-containing drugs intended for human use.

One approach to backfilling non-existent safety and quality data for cannabinoid active ingredients and those products made from them is to apply or devise assays that can provide relevant toxicity data in an in vitrosystem. Farha et al. (2020) reported that seven cannabinoids are potent antibiotics, including CBD and synthetic CBG. CBG inhibited the growth of gram-positive bacteria, including methicillin-resistant Staphylococcus aureus (MRSA), but not gram-negative bacteria unless their outer membrane was permeabilized (Farha et al. 2020). In addition, several volatile terpenes, the main constituents of essential oils extracted from Cannabis sativa L., also have potent antibiotic activity against gram-positive bacteria (Iseppi et al. 2019). We have previously written about the risks associated with disrupting the healthy microbiome of gram-positive vaginal bacterial species leading to dysbiosis (Orser 2022) and its further health complications.

Several successful approaches to assessing the toxicity of CBD have already been reported including human cell culture work by Torres et al. (2022) who showed that pure CBD has a repeatable impact on cell viability, but that hemp-derived finished CBD products had variable impact. Cultured human cell viability experiments demonstrated similar potencies across three different hemp-derived CBD products in the microgram per milliliter [mg/mL] range with increased viability at lower doses [2-4 mg/mL] and decreasing cell viability above 6 mg/mL (Torres et al. 2022). In the same study, the authors demonstrated that the presence of terpenes, specifically b-caryophyllene, in hemp extraction matrices also impacted cell viability.

Neswell, a cannabis therapeutics company in Israel, demonstrated through the application of their in vitroneutrophil cell line that cannabis extracts have inherent immune response biodiversity, suggesting that the choice of a cannabis source should be based on its function rather than on its chemoprofile (https://www.neswell.net). Inflammatory cytokine levels in inflamed peripheral blood mononuclear cells (PB_MC) showed a 10-fold difference across hemp extract products containing unidentified terpenes in suppressing the inflammatory cytokine, TNFa (Torres et al. 2022). The influence of CBD concentration on inflammatory cytokine production was previously reported by Vuolo et al. (2015) and Jiang et al. (2022).

Materials & Methods

Chemicals and Products Tested

THC-free, 99% pure CBD and CBG isolates were purchased from Open Book extracts in North Carolina (openbookextracts.com). All other chemicals including erythromycin (EM), and growth media were obtained from Sigma-Aldrich (St. Louis MO). Specific reagents in the qPCR kits were assembled in-house at MatMaCorp Inc. (Lincoln NE).

Monitoring Cell Viability: OD600nm and plating

Individual frozen glycerin stocks of L. crispatus HM103 from BEI Resources Repository served as inoculum to streak on a sterile MRS agar plate and incubated anaerobically at 37⁰C for 24-48 h until individual colony growth was observed. Single colonies were used to inoculate MRS broth and incubated for 24-48 h at 37⁰C which served as the inoculum for exposure to test products. Exposed cultures and all control cultures were incubated at 37⁰C for 48 h with OD₆₀₀ readings taken at time zero, +24 h, and +48 h using disposable cuvettes in a standard spectrophotometer. The products were also plated onto MRS agar plates to evaluate inherent contaminants that could affect turbidity values.

Molecular Analysis by qPCR

DNA isolation from bacterial cultures was done using the MatMaCorp (Lincoln, NE) StickE Tissue DNA Isolation kit modified for bacteria as per manufacturer instructions. Briefly, a lysis buffer is applied to the sample followed by a heating step, and a binding buffer is added, thus allowing DNA from the solution to bind to the matrix of the StickE column. The column was washed prior to eluting the purified DNA. Per manufacturer instructions, 10 µL of isolated DNA was used as a template for genetic analysis in a Lacto-TM assay (MatMaCorp). The assay is a customized TaqMan-based detection assay that is conducted using a four-channel fluorescence detection platform, the Solas 8 (MatMaCorp). The assay was designed to detect the unique 16S-rRNA DNA sequence for L. crispatus. Briefly, the assay is a probe-based method that begins with hybridizing the custom-designed probes with their desired nucleic acid target found in the sample. Once hybridized, detection takes place from the fluorescently labeled primer. The target has been assigned a channelon the Solas 8 and is detected independently.

Calling the Results

The calling algorithm uses first-order kinetics reaction properties (inflection point detection) in combinationwith a measure of the closeness of the signals associated with a specific target. Various indicators are tracked during the reactions to perform an on-the-fly analysis. The analysis is then consolidated by a measure of the similarity between the fluorescence signals at the end of the run. Aggregating values from the similarity measure, the end gain and the inflection point detection allow the Solas 8 software to make the call at the end of the run without having to compare a results library of known sample targets.

Results

Exposure of L. crispatus

Anaerobically grown cultures of L. crispatus were exposed to either CBD isolate or CBG isolate at each of two concentrations [5 mg/mL] and [10 mg/mL] with all appropriate controls. All treatment groups were evaluated by qPCR, turbidity at OD₆₀₀, and plate counts.

Molecular Analysis via qPCR

These data show the specificity of the Solas8 testing for evaluating these products, as a molecular-level screening is not influenced by test product solubility, opacity, or non-specific contamination present in some of the tested products that can interfere with optical density measurements.

Growth Monitoring

Turbidity monitoring, albeit non-specific, confirmed the species-specific qPCR findings, that is no inhibition for the two cannabinoid isolates evaluated (Fig. 2).

Conclusions

In this limited in vitro study using a sentinel lactobacilli response, we have shown that 99% pure CBD and CBG isolates were not inhibitory at the two doses evaluated by complementary observations following turbidity, plating, and by qPCR. Limitations in this study prevent definitive conclusions regarding what individual or combination of cannabinoids or other cannabis secondary metabolites are inhibitory in vivo to dominant lactobacilli species in the reproductive tract. These limitations include commercial product testing without knowledge of excipients or impact on the bioavailability of any active cannabinoid ingredients. In addition, dose-response curves were not generated and exposure under micro-aerobic conditions was not carried out.

Cannabidiol’s potential as an antimicrobial agent may be limited by its extremely low solubility in water and a propensity to stick to spurious proteins limiting systemic distribution in the body as a therapeutic. Interpreting microbiome study findings to human health outcomes will require multi-disciplinary corresponding clinical data findings of disease diagnosis, processes, and treatment within populations. Nonetheless, this nascent translational research opportunity is vast with the promise of benefiting patient outcomes (Wensel et al. 2022).

Health Canada released a scientific review report on products containing cannabis, specifically containing 98% or greater CBD and less than 1% of THC (Health Canada 2022) while the FDA just concluded that there are no existing guidelines applicable for recommending safety and quality guidelines to manage risk for CBD products (U.S. FDA 2023). The Health Canada committee unanimously agreed that short-term use of CBD is safe at 20 mg per day up to a maximum dose of 200 mg per day and that packaging should include both dosing instructions and potential side effects. The Committee did not address the antimicrobial potential of CBD or CBG formulations or specifically vulvar or vaginally administered cannabinoids. There is clearly more basic physiological research needed on the impact of self-administration of CBD preparations based on the route of exposure.

References

1. https://fda.gov/news-events/press-announcements/fda-concludes-existing-regulatory-frameworks-foods-and-supplements-are-not-appropriate-cannabidiol

Farha MA, El-Halfawy LM, Gale RT, MacNair CR, Carfrae LA, Zhang X, Jentsch NG, Magolan J, Brown ED (2020) Uncovering the hidden antibiotic potential of cannabis. ACS Infect Dis 6:338-346.

Health Canada (2022). https://www.canada.ca/content/dam/hc-sc/documents/corporate/about-health-canada/public-engagement/external-advisory-bodies/health-products-containing-cannabis/report-cannabidiol-eng.pdf

Hopkins AL (2008) Network pharmacology: the next paradigm in drug discovery. Nat Chem Biol 4(11):682-90.

Iseppi R, Brighenti V, Licata M, Lambertini A, Sabia C, Messi P, Pellati F, Benvenuti S (2019) Chemical characterization and evaluation of the antibacterial activity of essential oils from fibre-type Cannabis sativa L. (Hemp) Molecules 24:2302; doi:10.3390/molecules24122302.

Jiang Z, Jin S, Fan X, Cao K, Liu Y, Want X, Ma Y, Xiang L (2022) Cannabidiol inhibits inflammation induced by Cutibacterium acnes-derived extracellular vesicles via activation of CB2 receptor in keratinocytes. J Inflammation Res 15:4573-4583.

Orser CS (2022) Prevalence of Cannabinoid-containing Intimate Care Products Exposes Longstanding Unmet Need for Safety Data on Community Microbiota Exposure. https://cannabisindustryjournal.com/feature_article/intimate-care-products-with-cannabinoids-need-more-safety-data/

Torres AR, Caldwell VD, Morris S, Lyon R (2022) Human cells can be used to study cannabinoid dosage and inflammatory cytokine responses. Cannabis Sci & Tech 5(2) 38-45).

U.S. FDA (2023) https://www.fda.gov/news-events/press-announcements/fda-concludes-existing-regulatory-frameworks-foods-and-supplements-are-not-appropriate-cannabidiol

Vuolo F, Petronilho F, Sonai B, Ritter C, Hallak JE, Zuardi AW, Crippa JA, Dal-Pizzol F (2015) Mediators Inflamm 538670

Wensel CR, Salzberg SL, Sears CL (2022) Next-generation sequencing insights to advance clinical investigations of the microbiome. J Clin Invest 132(7):e154944. https://doi.org/10.1172/JCI154944.

August 31, 2022

Soapbox

Fly By Night: Do Your Gummies Take the Red-Eye?

By Douglas Rohrer

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The global vitamin supplement market is projected to grow at 6.2% compound annual growth rate (CAGR) to $71.37 billion by 2028 with the most rapid growth now occurring in the gummy vitamin segment. Gummy supplements are expected to have the fastest CAGR at 12.6% to exceed $33 billion by 2028. Initially developed for youths, gummies are now preferred by all age segments as an alternative to tablets, capsules and pills.

As one might expect, cannabidiol (CBD) gummies are also projected to grow rapidly at a 30.7% CAGR to $13.9 billion by 2028. In terms of actual number of CBD gummies produced last year, a rough estimate would be at least 1.7 billion. For perspective that equates to 53 gummies produced every second, 24 hours a day, 365 days per year. One might reasonably ask, “So where do all these gummies come from?” and “Who makes them and under what conditions and quality assurance standards?”

There is no short answer to these questions nor confidence that all cannabinoid gummies are manufactured with adherence to a minimum set of safety and quality standards. Gummy recipes and ingredients are readily available online and there is no shortage of hobbyists who make small batches for family, friends and to sell at retail pop-ups and farmers’ markets. There are a number of well-known brands that started out in home kitchens and garages. In terms of production scale, on the other end of the spectrum are companies like Bloomios, Inc. (OTCQB: BLMS), that operates a 51,000-square-foot Current Good Manufacturing Practices (cGMP) compliant facility in Florida.

The Hobbyists

For the hobbyist producer, they often begin to scale out of their home kitchen and take over part of their garage or basement and while the entrepreneurial spirit is admirable, most consumers wouldn’t be comfortable with their pharmaceuticals, supplements or even grocery items being manufactured under these conditions which often lack:

Rigorous sanitary practices
Measures to mitigate contaminants entering the production areas
Quarantine, chain-of-custody audit and testing of active ingredients used in production
Standardized and rigorous quality assurance testing of finished product
Certificate of Analysis (COA) for active ingredients in finished product for certainty of dosage levels
Labeling and packaging standards to ensure product information and volumes are correct
Batch record data collection, retention and audit procedures.

However, the hobbyists constitute only a very small fraction of gummy production today, and they typically take great pride in their work and show a high degree of care in production practices. Thus, when demand begins to outpace the artisanal home production capacity, many growing brands turn to contract manufacturers to assist with scaling the production side while the brand focuses on the sales, marketing and distribution side of the business. This is an ideal solution as high quality product can be produced at volume in cGMP facilities which enhances the consumer experience, confidence in the product and further grows brand value. This is a best-case scenario of small emerging brands that care deeply about their reputations and their customers’ experience scaling production and growing responsibly.

The Opportunists

The real underbelly of commercial gummy production is characterized by the pure profit seeking producers that set up semi-permanent production lines in flex-industrial spaces not suitable for food handling, with limited buildout for isolation of each production stage. This process includes: materials storage, weight/measures prep, ingredient mixing, molding, dehydration, coating, sorting and filling, labeling and finish packaging. Lacking cGMP compliant facilities and practices, they neglect or fail entirely to maintain batch records, COAs or chain-of-custody practices and have limited ability to address defective product once in the stream of commerce. Let’s refer to these manufacturers as the “Opportunists.”

Opportunists see the current cannabinoid gummy market for what it is. It is an emerging market really taking form only since the 2018 Farm Bill legalized hemp derived cannabinoids. As such it is very much in its “gold rush” phase with many of the participants having just entered the sector. Many participants have adopted ad hoc practices with no standardization and no explicit federal oversight because the FDA has yet to acknowledge any cannabinoids under its generally regarded as safe (GRAS) standard.

In addition, the FDA has excluded CBD products from the dietary supplement definition of the Food, Drug and Cosmetics (FD&C) Act. Under the FD&C Act, if a substance is an active ingredient in a drug product that has been approved or has been authorized for investigation as a new drug, then products containing said substance are excluded from the definition of dietary supplement. So far cannabinoid gummy demand has continually outstripped supply supporting attractive margins and with little oversight. The Opportunist mindset has focused on maximizing profits while they can before regulation increases costs, compresses margins and reduces profits.

The Opportunists have more cover to seek profit maximization as opposed to incurring the cost of setting up cGMP facilities and adhering to rigorous standards due to the fact that the brands consumers recognize are often manufactured by one or more third-party contract manufacturers. Some brands also want to maximize near-term profits and manufacturers with a lower cost structure can more effectively compete on price as opposed to quality.

As demand surges, some brands will supplement their third-party cGMP produced product with additional product sourced from Opportunists and “recycle” the valid COAs from their cGMP product without the cGMP manufacturer or consumers even knowing. With lax regulatory oversight, these brands are inclined to look the other way on their contract manufacturer’s production practices so long as the large volume orders are delivered on time and at lower cost.

For gummies produced by Opportunists, if there are product defect issues, the consumers likely won’t be able to rely on the batch record data and purported COAs linked to/from QR codes on the container, many of these COAs have been recycled from legitimate batches or simply doctored up and reproduced rather than generated on a per batch basis. There is limited to no audit trail and recalls are unlikely to be effective, if even initiated. A refund is the most likely solution a consumer has which leaves perhaps a much larger run of defective product in the market still unaddressed. Moreover, brands that suffer reputational harm due to quality issues can simply launch a substitute brand with a similar look through its same distribution channels and maintain much of its market share.

Best Practices

If today’s CBD gold rush sounds much like the Wild West, you would be correct. However, as more consumers become aware of cannabinoids’ health and wellness benefits in addition to the recreational uses, this larger and more diverse consumer base is raising the bar and demanding more transparency and certainty on manufacturing practices than ever before.

americana dummies — A roughly estimated 1.7 billion CBD gummies were produced last year

How are the leading cannabinoid nutraceutical manufacturers proactively addressing consumers’ desire for high quality, rigorously tested products manufactured in accordance with standards already imposed on mainstream nutritional supplement and prepared food manufacturers? Although the answer may be simple, the implementation and ongoing compliance is not.

The answer is voluntary adoption and compliance with the same regulations applicable to non-cannabinoid dietary supplement manufacturers. Given that the FDA has not recognized cannabinoids as dietary supplements quite yet, certain aspects of dietary supplement regulation can’t be adhered to such as notifying the FDA of structure/function claims as new products are brought to market or notice of new dietary ingredients. On the other hand, many of the regulations can and should be adhered to by cannabinoid nutraceutical manufacturers to ensure its safe, transparent orderly growth.

Chief among the FDA requirements that Bloomios and other leading manufacturers adhere to are:

Register with the FDA as a food handling and production facility.
Adopt Current Good Manufacturing Practices for dietary supplements which establishes uniform standards needed to ensure quality throughout the manufacturing process and verification of the identity, purity, strength and composition of their products.
Undertake at least annually an independent third-party cGMP audit of their facility and procedures.
Comply with Code of Federal Regulations (21 CFR 101.36) supplement label requirements to ensure that the ingredients list is accurate, and the content matches the amount declared on the label among other disclosures.

The most significant challenge in adopting all of the above best practices is cGMP facility qualification and ongoing compliance. The cGMP standards require specific facility build-out features, equipment, and of course standard operating procedures. There are significant additional costs to bring a cGMP facility on-line, additional time and required experienced personnel that can implement the operating procedures and recertification every time a production line’s configuration is changed or augmented with additional equipment.

Bloomios annual cGMP audit was conducted in August and over 130 specific requirements were evaluated and graded. While Bloomios passed the audit and evaluation, what is of far greater significance is that cGMP practices become part of a company’s culture so that these high standards are maintained year-round and not rushed into practice just for the audit.

July 6, 2022

CBD Safety in Edibles: What Regulators are Thinking

By Steven Gendel, Ph.D.

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Despite the popularity of cannabidiol (CBD) infused edibles among consumers there are storm clouds on the horizon for this market. The potential threat stems from continuing uncertainty about the regulatory status of CBD in the United States (US) and the European Union (EU). Recent statements by government agencies in both areas are reminders that regulators could make decisions or take actions that would suddenly end the viability of this market. Any company that sells, or is planning to sell, CBD infused edibles such as bakery items, candy and beverages needs to understand what the regulators are thinking now and what might happen in the future.

in the US, the 2018 Farm Bill created a category of products called hemp that are derived from the Cannabis sativaplant and contain less than 0.3% tetrahydrocannabinol (THC). This law also explicitly confirmed the authority of the US Food and Drug Administration (FDA) to regulate the safety of hemp-derived infused edibles. This means CBD needs to navigate the New Dietary Ingredient pathway for dietary supplements, and either the food additive petition process or the Generally Recognized as Safe (GRAS) pathway for foods before it can be used as an ingredient in a food. All three of these processes require that someone (an individual, a company or a group) acting as a petitioner or notifier must submit safety data to the agency or arrange for a safety evaluation by independent experts.

In the EU, CBD is regulated as a Novel Food in a process that is triggered by a submission to the European Commission. The submission must include safety data that is evaluated by the European Food Safety Authority (EFSA). In England and Scotland, CBD products are also novel foods and are evaluated using a process like that in the EU. As in the US, it is the responsibility of an applicant to provide the safety data.

The standard used by the FDA to judge the safety of new food substances in all three pathways is that there should be a “reasonable certainty in the minds of competent scientists that the substance is not harmful under the conditions of its intended use.” The standard used by EFSA for novel foods is, “the food does not, on the basis of the scientific evidence available, pose a safety risk to human health.”

It is important to realize that both in the US and the EU the safety standard for evaluating new food substances only considers the safety of that substance. The laws or regulations that define agency authority do not allow for consideration of any potential benefits. Approval (or rejection) must be based solely on the safety of the substance. Further, safety is evaluated in the context of the intended use of the substance, the planned level of use and the resulting consumer exposure to that substance.

What do we know about FDA’s and EFSA’s current thinking about CBD safety?

Unfortunately, both the FDA and EFSA have made it abundantly clear that they believe the available scientific data does not meet the required safety standards. FDA has issued multiple warning letters to companies that sell CBD products and has rejected two NDI notifications for CBD. Although these actions were primarily based on non-safety issues (illegal health claims and the drug exclusion provision in the FD&C Act, respectively), in each case the FDA also raised safety concerns. This was done by saying that the agency is not aware of any data that would support a GRAS determination or that the products raise “concerns about the adequacy of the safety evidence.” This doubt echoes statements from the agency in public meetings and advisories. These doubts were expressed as recently as June 2022 during a meeting of the FDA Science Advisory Board.

Similarly, EFSA has stated that they feel that there are critical gaps in the existing CBD safety data. In April 2022, they published a statement with a detailed analysis of the relevant scientific literature and explicitly identified critical data gaps. EFSA said that these data gaps prevented them from evaluating CBD as a novel food.

What do the regulators see as data gaps?

Although the details of each of the data gaps are technically complex, for both the FDA and EFSA they fall into few broad categories.

The first is that the agencies feel that they need better information on how CBD behaves in the human body. This is described as understanding the absorption, distribution, metabolism and excretion (ADMA) of CBD. The agencies also would like to see data on whether repeated use of CBD might cause damage to specific organs that does not occur from single exposures.

The second need is for more data related to the negative effects that have been observed in some previous work. This includes effects on the liver and reproductive system. In particular, the agencies would like to know whether it is possible to identify a level of exposure that is low enough to not cause any negative effects. This is termed the No Observed Adverse Effect Level (NOAEL). In an ingredient safety assessment, the NOAEL is used to establish a safe intake level, called the Acceptable Daily Intake (ADI). Comparing the ADI to the expected exposure for the intended use allows the regulators to assess overall safety for a substance. If the expected exposure is below the ADI, the substance is considered safe. Both agencies feel that the existing data do not allow them to identify a NOAEL for CBD.

The third data need relates to the composition of the CBD products used in safety studies. Food safety determinations are based on the total composition of an ingredient that is produced using a fully defined process. Even if the potential ingredient is 95% or 99% pure, a safety evaluation needs to know what is in that other 5% or 1%, and that this is the same from batch to batch. For example, the presence or absence of residual processing chemicals (such as extraction solvents) and the nature and concentration of substances such as other cannabinoids and terpenes will differ between manufacturers and processes. These differences could affect the overall safety profile for each CBD product. Therefore, it is considered important that studies supporting a safety determination for a new substance be carried out with the actual article of commerce.

Unfortunately, many different CBD preparations have been used in past studies, and in most cases these preparations were poorly characterized. This makes it difficult or impossible to combine the safety data obtained using one product with data obtained with a different product. For example, data obtained using CBD isolates from two different sources cannot be combined unless it can be shown that they were made using the same process and have the same overall composition.

What does this mean for the future?

Neither the FDA nor EFSA is likely to take any positive action on CBD until they receive safety data that fill the gaps that they have identified.

Given these data problems, it is likely that there will be little or no movement on regulatory approvals for CBD in edibles (or dietary supplements in the US) for at least several years. In the US, these products will remain in legal limbo, with state regulations playing the leading role in determining what is allowed on the market. Products with health claims will continue to be particularly vulnerable to FDA action. The situation in the EU will be at least as confusing because, in the absence of action from EFSA, the regulatory and market status of CBD edibles will be determined by each member country independently.

In view of this uncertainty and business confusion, that are three ways that companies making CBD and CBD edibles can respond. First, in the short term, they can develop and implement manufacturing processes that ensure that their products are consistent from batch to batch and that they have the intended dose of CBD per serving or per product unit. This includes working with the analytical community and organizations such as AOAC and ASTM to ensure that there are validated testing methods available for the CBD and for the final edible products.

In the medium term, business risk management plans for companies that make CBD and CBD infused edibles should consider the possibility that new scientific data will push food safety authorities to actively conclude the CBD does not meet the current regulatory safety standards. In that case, the regulators might start to act against all CBD-containing products.

The structure of cannabidiol (CBD), one of 400 active compounds found in cannabis.

Businesses should also be aware that the agencies could make a positive safety determination but that they would use the available data to establish a low maximum allowed dose per serving or set very low limits on the presence of specific contaminants such as other cannabinoids.

In the longer term, the CBD industry as a whole might consider advocating for legislative changes. The best statutory fix is likely to be one that that regulates all cannabis-derived products in a system or agency that is separate from the food safety system. This approach is being used in Canada under the Cannabis Act. It is also similar to the way that alcoholic beverages are regulated in the US. This approach, if appropriately designed, could avoid the need for safety determinations but might also limit market access. While this approach could bring clarity and certainty to the market, it is important to remember that it will take time and effort to create a functionally system under this scenario.

There are many market reports that forecast on-going high rates of growth for the CBD market. However, the regulatory and scientific developments that are likely to occur of the next couple of years will determine whether those projections can become reality.

Companies making these products need to monitor changes and prepare to respond to either positive or negative events.

These companies should also remember that edible products are mostly made from food ingredients using standard food product processes. It is critical that these products be made under a system that prevents food-borne hazards.

May 4, 2022

FDA Issues First Warning Letters for Delta-8 THC

By Cannabis Industry Journal Staff

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In an unprecedented move, the U.S. Food & Drug Administration (FDA) has issued warning letters today to companies selling products containing delta-8 THC. In total, the FDA sent out five warning letters to companies for violating the Federal Food, Drug, and Cosmetic Act (FD&C Act).

Image from the FDA’s consumer update on Delta-8 THC

The violations include illegal marketing of unapproved delta-8 THC products as treatment for medical conditions, misbranding and adding delta-8 THC to food products. Back in September of last year, the FDA published a consumer update on their website, seeking to educate the public and offer a public health warning on delta-8 tetrahydrocannabinol, otherwise known as delta-8 THC.

Delta-8 THC is a cannabinoid that can be synthesized from cannabidiol (CBD) derived from hemp. It is an isomer of delta-9 THC, the more commonly known psychoactive cannabinoid found in cannabis. Delta-8 THC does produce psychoactive effects, though not quite as much as its better-known cousin, delta-9 THC. Many regulators and industry stakeholders are increasingly concerned about the rise in popularity of delta-8 products, namely because of the processing involved to produce it. Delta-8 THC is often synthesized using potentially harmful chemicals.

The FDA has a history of sending a lot of warning letters to companies marketing CBD products inaccurately and making drug claims. Earlier this year, they sent a number of letters to companies claiming that CBD can cure or prevent Covid-19.

According to Janet Woodcock, M.D., principal deputy commissioner at the FDA, they are getting more and more concerned about the popularity of delta-8 THC products sold online. “These products often include claims that they treat or alleviate the side effects related to a wide variety of diseases or medical disorders, such as cancer, multiple sclerosis, chronic pain, nausea and anxiety,” says Woodcock. “It is extremely troubling that some of the food products are packaged and labeled in ways that may appeal to children. We will continue to safeguard Americans’ health and safety by monitoring the marketplace and taking action when companies illegally sell products that pose a risk to public health.”

The FDA sent warning letters to the following companies selling delta-8 THC products:

ATLRx Inc.
BioMD Plus LLC
Delta 8 Hemp
Kingdom Harvest LLC
M Six Labs Inc.

April 19, 2022

FDA Warning Letters: Stop Claiming CBD Prevents COVID

By Cannabis Industry Journal Staff

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Once again, the U.S. Food and Drug Administration (FDA) has issued a number of warning letters to companies selling hemp-derived cannabidiol (CBD) products. This time around, the FDA sent these warning letters to companies that had statements on their website claiming CBD is an effective treatment or prevention of Covid-19.

In this latest round, the FDA sent a total of seven warning letters to:

Greenway Herbal Products LLC
UPSY LLC
Functional Remedies, LLC dba Synchronicity Hemp Oil
Nature’s Highway
Heaven’s Organic LLC
Cureganics
CBD Social

Earlier this year, a slew of preliminary research studies went viral for shedding light on promising signs that certain cannabis compounds could help treat or prevent Covid-19. The conclusions from most of that research is: It is still too early to tell if any of these studies will show evidence of cannabis treating Covid-19, let alone if they mean cannabis products can be used as a treatment or preventative for Covid-19. However, the research is significant and we should keep an eye on any developments that come from those studies.

The hemp-derived CBD market has a history of clashes with the FDA over health claims. Since the Farm Bill legalized cannabis with less than 0.3% THC back in 2018, the hemp-derived CBD market has proliferated, with all sorts of companies seizing the opportunity. Jumping on the health and wellness trend, companies incorporated this messaging into their marketing campaigns. Over the past four years, the FDA has issued dozens and dozens of warning letters and threatened enforcement actions to companies making unsubstantiated health claims about CBD.

While CBD definitely does have medical benefits, such as being used as an anti-inflammatory or anticonvulsant, preliminary research alone is not enough to say it does. Products need to be approved by the FDA with a new drug application (NDA) in order to make those claims. Therefore when companies make unsubstantiated health claims about their CBD products, like claiming it can prevent Covid-19, they are violating the FD&C Act by marketing “unapproved new drugs” or “misbranded drugs.”

The bottom line is companies that are marketing CBD products need to ensure that their marketing materials and labeling comply with FDA requirements and avoid making unapproved drug claims.

January 25, 2022

Research Suggests Cannabis Could Help Treat Covid-19

By Cannabis Industry Journal Staff

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One study published in the Journal of Natural Products two weeks ago proposes using the cannabinoid CBDA in conjunction with vaccines to prevent SARS-CoV-2 (Covid-19) infection. The study was conducted in a lab and says that cannabinoid acids (CBGA, THCA-A, CBDA, etc.) can bind to the SARS-CoV-2 spike protein, blocking cell entry and effectively prevent infection.

Another study published in Science Advances claims cannabidiol (CBD) inhibits SARS-CoV-2 replication and helps prevent infection by inducing endoplasmic reticulum stress response and innate immune responses. The study was conducted in cells and mice, but also had groups of human patients that tested positive for Covid-19 less after taking CBD. “In matched groups of human patients from the National COVID Cohort Collaborative, CBD (100 mg/ml oral solution per medical records) had a significant negative association with positive SARS-CoV-2 tests,” reads the abstract.

Two studies in Israel, one proof-of-concept study and one early-stage clinical trial, have just launched examining the effects of CBD on patients already infected with Covid-19.

All of this research already underway does not mean that cannabis prevents Covid-19. In fact, one clinical trial in Brazil that has finished, found no evidence that CBD helped patients with mild Covid-19. Published in the Cannabis and Cannabinoid Research Journal, patients with mild Covid-19 received 300 mg of CBD for 14 days or a placebo. The study suggests that clinical trials should be conducted for the effects of CBD on patients with severe Covid-19, not just mild symptoms.

The clinical trial in Israel that is trying to study the effects of CBD on patients with severe Covid-19 is having trouble finding participants because the newer Omicron variant mainly produces only mild to moderate symptoms.

It is far too early to tell if any of these studies will show evidence of cannabis treating Covid-19, let alone if they mean cannabis products can be used as a treatment or preventative for Covid-19. However, the research is significant and we should keep an eye on any developments that come from those studies.

Statnews.com said it best:

“The latest hubbub is an example of both the promise of cannabinoids — components of cannabis — as potential therapies, but also the hype around them, which can far outpace the evidence that they work. It’s left researchers and consumer advocates scrambling to warn people that patients shouldn’t be turning to over-the-counter products or recreational marijuana in hopes that it might protect them from Covid-19.”

May 13, 2021

Defining Hemp: Classifications, Policies & Markets, Part 2

By Darwin Millard

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In Part 1 of this series we answered the question: What is “hemp”; and addressed some of the consequences of defining “hemp” as a thing. In Part 2, I will explore this topic in more detail and provide some commonsense definitions for several traditional hemp products based on a classification approach rather than separating “cannabis” from “hemp”.

Classifications, Specifications, and Test Methods – Establishing Market Protections for Hemp Products Through Standardization

Does making a distinction between “hemp” and “cannabis” make it easier to protect the interests of the seed and fiber markets?

On the face of it, this question seems obvious. Yes, it does.

Up to this point in history, the bifurcation of the cannabis plant into resin types and non-resin types has served to provide protections for the seed and fiber markets by making it easier for producers to operate, since the resins (the scary cannabinoids, namely d9-THC) were not involved. Today, however, the line in the sand, has been washed away, and “hemp” no longer only refers to non-resin producing varieties of the cannabis plant.

As more and more hemp marketplaces come online with varying limits for d9-THC the need for standardization becomes even more pressing. Without standardization, each marketplace will have its own requirements, forcing businesses looking to sell their products in multiple jurisdictions to comply with each region’s mandates and adds a significant level of burden to their operations.

Providing an internationally harmonized definition for hemp is an important first step but allowing the d9-THC limit to vary from jurisdiction to jurisdiction has some unintended (or intended) consequences (#NewReeferMadness). These discrepancies between legal marketplaces will inevitably lead to the establishment of global trade regions; where, if your product cannot meet the definition of “hemp” in that region, then you could effectively be barred from participating in it.

A process which has already started. Harmonizing around 0.3% is great for the US, Canada, and European Union, but what about other stakeholders outside of these markets?

And, at what point does the conflict of hemp from one region with a d9-THC content of 0.3% and hemp from another region with a d9-THC content of 1% being sold into the same market become a problem?

Perhaps a better long-term solution for protecting the market interests of “hemp product” stakeholders would be to establish specifications, such as identity metrics, total cannabinoid content, especially d9-THC, and other quality attributes which have to be verified using test methods for a product to be classified as “hemp”. This system of standards (classifications, specifications, and test methods) would allow for more innovation and make it significantly easier for cannabis raw materials that meet these specifications to find a use rather than being sent to the landfill. Bolstering advancements and opening the door for more market acceptance of the cannabis plant, its parts, and products.

An Alternative Approach to Defining Hemp

Below are some proposed definitions related to common terminology used in the hemp marketplace based on the concept that there are no hemp plants, there are only cannabis plants that can be classified as hemp, and hemp products are simply cannabis products that meet certain specifications to allow them to be classified and represented as hemp.

Hemp, n—commercial name given to a cannabis plant, its parts, and products derived therefrom with a total d9-THC content no more than the maximum allowable limit for the item in question. (Maybe not the best definition, but it makes it clear that not only does the limit for d9-THC vary from jurisdiction to jurisdiction it varies from product type to product type as well.)
Hemp flower, n—commercial name for the inflorescence of a cannabis plant that can be classified as hemp.
Hemp seed, n—commercial name for the seeds of a cannabis plant which are intended to be used to grow another cannabis plant that can be classified as hemp.
Hempseed, n—commercial name for the seeds of a cannabis plant which are intended to be used as food or as an ingredient in food.
Hemp seed oil, n—commercial name for the oils expressed from the seeds of a cannabis plant.
Hemp seed cake, n—commercial name for the solid material byproduct generated during the expression of the oil from the seeds of a cannabis plant.
Hemp flour/meal/dietary-fiber, n—commercial name for the powdered seed cake of a cannabis plant intended to be used as a food or as an ingredient in food with a protein content no more than 35% by weight.
Hemp protein powder, n—commercial name for the powdered seed cake of a cannabis plant intended to be used as a food or as an ingredient in food with a protein content between 35% and 80% by weight.
Hemp protein isolate, n—commercial name for the powdered seed cake of a cannabis plant intended to be used as a food or as an ingredient in food with a protein content above 80% by weight.
Hemp fiber, n—commercial name for the cellulosic-based natural fibers of a cannabis plant.
Hemp shives, n—commercial name for the hurd of a cannabis plant which have been processed to defined specifications.
Hempcrete, n—commercial name for a solid amalgamation of various aggregates and binders, typically comprised of the hurd (shives) of a cannabis plant and lime.

The d9-THC limits for each product were purposefully omitted because these specifications still need to be defined for each product type. Leaving the d9-THC limit up to each authority having jurisdiction, however, is not the answer. It is fine if you comply with a lower d9-THC limit and want to sell into a market with a higher d9-THC limit, but what do you do if you are above the limit for the market you want to sell into? For now, you lose out on potential revenue.

I am not advocating that everyone starts selling “hemp” as “cannabis,” or vice versa, far from it. I am advocating for a more commonsense and inclusive approach to the marketplace though. One that would allow for the commercialization of materials that would normally be going to waste.

To me it is simply logical. There are no hemp plants, there are only cannabis plants that can be classified as hemp. There are no hemp products, there are only cannabis products that can be classified as hemp. In order for a cannabis product to be marketed, labeled, and sold as a hemp product, i.e. to be classified as a hemp, it would need to meet a set of specifications and be verified using a set of test methods first. But fundamentally the product would be a cannabis product being certified as “hemp”. And that is the shift in thinking that I am trying to get across.

Exclusionary Actions – Disenfranchising Stakeholders

The cannabis plant is an amazing plant and to fully capitalize on the potential of this crop we have to start allowing for the commercialization of cannabis raw materials that are not controlled by the UN Single Conventions, i.e. the seeds, stalks, roots, and leaves when not accompanied by the fruiting tops or the resin glands. Not to do so disenfranchises a significant number of stakeholders from participating in established legal avenues of trade for these goods. A concept proposed and endorsed the ASTM D37 in the published standard D8245-19: Guide for Disposal of Resin-Containing Cannabis Raw Materials and Downstream Products.

If you are stakeholder in the hemp marketplace, you may feel threatened by the idea of the market getting flooded with material, but how are the demands of the so called “green economy” going to be met without access to more supply? Organic hemp seed for food production is scarce but there is plenty of conventional hemp seed for the current demand, but what happens when hempmilk is positioned to displace soymilk in every major grocery store? To feed the growth of the human population and allow for a transition to a truly “green economy,” we need to ensure that the policies that we are putting in place are not excluding those looking to participate in the industry and disenfranchising stakeholders from burgeoning marketplaces, nor alienating a segment of the marketplace simply because their plant cannot be classified as “hemp”.

Until next time…

Live long and process.

April 29, 2021

Defining Hemp: Classifications, Policies & Markets, Part 1

By Darwin Millard

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What is “hemp”?

The word “hemp” has many meanings. Historically the term has been used as the common name for the Cannabis sativa L. plant. Just like other plants, the cannabis plant has two names, a common name, hemp, and a scientific name, Cannabis sativa L. After the ratification of the UN Single Conventions on Narcotic Drugs and Psychotropic Substances, in 1961 and 1972 respectively, the term started to be used to distinguish between resin producing varieties of the cannabis plant and non-resin producing varieties of the cannabis plant. Nowadays the term is generally used to refer to cannabis plants with a delta-9-tetrahydrocannabinol (d9-THC), a controlled substance, content equal to or less than the maximum allowable limit defined by each marketplace.

Tetrahydrocannabinol (THC), just one of hundreds of cannabinoids found in cannabis.

In the United States and Canada, the limit is defined as 0.3% on a dry weight bases, and until November 2020, in the European Union, the limit was defined as 0.2%. After years of effort the “hemp” industry in Europe was successfully able to get the limit raised to 0.3% to be in line with the United States and Canada – creating the largest global trade region for hemp products. But there exist several marketplaces around the world where, either through the consequences of geographic location or more progressive regulations, the d9-THC content in the plant can be substantially higher than 0.3% and still considered “hemp” by the local authority.

To address these variances, ASTM International’s Technical Committee D37 on Cannabis has been working on a harmonized definition of hemp, or industrial hemp, depending on the authority having jurisdiction, through the efforts of its Subcommittee D37.07 on Industrial Hemp. The following is a proposed working definition:

hemp, n—a Cannabis sativa L. plant, or any part of that plant, in which the concentration of total delta-9 THC in the fruiting tops is equal to or less than the regulated maximum level as established by an authority having jurisdiction.

Discussion: The term “Industrial Hemp” is synonymous with “Hemp”.

Note: Total delta-9 THC is calculated as Δ⁹-tetrahydrocannabinol (delta-9 THC) + (0.877 x Δ⁹-tetrahydrocannabinolic acid).

This definition goes a long way to harmonize the various definitions of hemp from around the world, but it also defines “hemp” as a thing rather than as a classification for a type of cannabis plant or cannabis product. This is a concept rooted in the regulatory consequences of the UN Single Conventions, and one I strongly disagree with.

The definition also leaves the total d9-THC limit open-ended rather than establishing a specified limit. An issue I will address further in this series.

Can “hemp products” only come from “hemp plants”?

If you are an invested stakeholder in the traditional “hemp” marketplace, you would say, yes.

But are there such things as “hemp plants” or are there only cannabis plants that can be classified as “hemp”? (The definition for hemp clearly states that it is a cannabis plant…)

There is no distinction between the cannabinoids, seeds, and fibers derived from a cannabis plant that can be classified as “hemp” and those derived from a cannabis plant that cannot. The only difference is the word: “cannabis,” and the slew of negative connotations that come along with it. (Negative connotations that continue to be propagated subconsciously, or consciously, whenever someone says the “hemp plant” has 50,000+ uses, and counting, and will save the world because it’s so green and awesome, but not the “cannabis plant”, no that’s evil and bad, stay away! #NewReeferMadness)

The declaration that “hemp products” only come from “hemp plants” has some major implications. “Hemp seeds” can only come from “hemp plants”. “Hemp seed oils” can only come from “hemp seeds”. “Hemp fibers” can only come from “hemp plants”. Etc.

What does that really mean? What are the real-world impacts of this line of thinking?

Flat out it means that if you are growing a cannabis plant with a d9-THC content above the limit for that plant or its parts to be classified as “hemp”, then the entire crop is subjected to the same rules as d9-THC itself and considered a controlled substance. This means that literal tons of usable material with no resin content whatsoever are destroyed annually rather than being utilized in a commercial application simply because a part or parts of the plant they came from did not meet the d9-THC limit.

It is well known that d9-THC content is concentrated in the glandular trichomes (resin glands) which are themselves concentrated to the fruiting tops of the plant. Once the leaves, seeds, stalks, stems, roots, etc. have been separated from the fruiting tops and/or the resin glands, then as long as these materials meet the authority having jurisdiction’s specifications for “hemp” there should be no reason why these materials could not be marketed and sold as “hemp”.

There are several reasons why a classification approach to “hemp plants” and “hemp products” makes more long-term sense than a bifurcation of the “cannabis” and “hemp” marketplaces, namely from a sustainability aspect, but also to aid in eliminating the frankly unwarranted stigma associated with the cannabis plant. #NewReeferMadness

That said, say you are a producer making shives from the stalks of cannabis plants that can be classified as “hemp” and then all of a sudden, the market opens up and tons of material from cannabis plants that cannot be classified as “hemp,” that was being sent to the landfill, become available for making shives. Would you be happy about this development? Or would you fight tooth and nail to prevent it from happening?

In this segment, we looked at the history of the term “hemp” and some of the consequences from drawing a line in the sand between “cannabis” and “hemp”. I dive deeper into this topic and provide some commonsense definitions for several traditional hemp products in Part 2 of Defining Hemp: Classifications, Policies & Markets.

March 25, 2021

FDA Issues Warning Letters on Marketing and Sale of OTC CBD Products

By Seth Mailhot, Steve Levine, Emily Lyons, Leah Kaiser, Marshall Custer

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The U.S. Food and Drug Administration (FDA) issued warning letters this month to two companies concerning the marketing and sale of over-the-counter (OTC) drug products containing cannabidiol (CBD) as an inactive ingredient. The letters allege violations of the Federal Food, Drug, and Cosmetic (FD&C) Act related to current good manufacturing practice requirements and marketing of new drugs without FDA approval.

At issue: labeling, NDAs and active ingredients

The companies subject to the warning letters market OTC drug products that contain CBD as an inactive ingredient. In the warning letters, the FDA states that it has not approved any OTC drugs containing CBD. According to the FDA, an approved new drug application (NDA) is required to legally market nonprescription or OTC drug products containing CBD, regardless of whether the CBD is an active or inactive ingredient. The FDA notes that CBD has known pharmacological effects and demonstrated risks, and that CBD has not been shown to be safe and suitable for use, even as an inactive ingredient. As a result, the FDA states that CBD cannot be marketed in OTC drug products.

Further, the warning letters noted the marketing of several CBD products that highlighted the benefits of CBD for a range of conditions in such a manner that, according to the FDA, “misleadingly suggests that [their] . . . products are approved or endorsed by FDA in some way when this is not true.” The FDA also took issue with the way products were labeled, which included callouts on the front label regarding the CBD content of the product (a requirement under most state laws that permit CBD as an ingredient). Similarly, the FDA also noted that some of the products advertised CBD as an active ingredient in a topical pain reliever product. According to the FDA, no company may legally market such a product, since there are no OTC monographs or NDAs that allow the use of CBD in an OTC drug.

What this means for you

These warning letters highlight the FDA’s vigilance regarding OTC CBD products. Regardless of whether the CBD is labeled as an active or inactive ingredient, the FDA has taken the position that nonprescription CBD drugs are in violation of the FD&C Act. Companies marketing CBD products should be careful to ensure their marketing practices, as well as their product formulations, do not present a heightened risk of FDA enforcement.

March 12, 2021

Is Your CBD Product Verifiably Natural?

By Jordan Turner

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Natural product analysis using Carbon-14 is a valuable scientific tool that can be used to confirm the naturality of cannabidiol-based (CBD) ingredients by verifying the percentage of a product that is obtained from naturally-sourced ingredients. Determining the percentage of biobased content in a product allows companies to ensure their CBD ingredients are truly natural-derived, identify the presence of synthetic adulterants, and authenticate marketing and “natural” labeling claims.

Why consider natural product analysis using Carbon-14 to validate your natural CBD products?

Carbon-14 is an isotope present in naturally-sourced materials. Natural product analysis measures the percentage of Carbon-14 present in an ingredient or product. Higher percentages indicate that a product is primarily or completely made with natural-sourced ingredients as opposed to synthetic, petroleum-derived alternatives. These cheaper, synthetic alternatives created from petroleum-based sources cannot be measured using Carbon-14. A product that is all-natural and completely plant-sourced will show a result of 100% biobased content whereas a low or zero percentage will reveal a product that is partially or completely formulated with synthetic adulterants.

Why should you be concerned with verifying the naturality of your CBD products? In recent years, the popularization of CBD extract has increased its demand as an ingredient in personal care and cosmetic products. Higher costs associated with the use of natural CBD extract instead of artificial extracts leads to the use of adulterated ingredients by some manufacturers or false label claims that a product is natural when it is not.

How can you prove your products are the real deal and ensure your customers are sure they’re getting the natural ingredients they expect? Artificial ingredients derived from petrochemical sources do not contain any carbon-14 content. The results of natural product analysis reveal the percentage of a sample that is procured from natural sources, allowing manufacturers and quality assurance teams to confirm their CBD ingredients and products are not synthetic or adulterated and to strengthen claims that their product is truly natural-derived.

Natural product analysis can authenticate the natural content of your CBD products. Validating naturality with Carbon-14 testing strengthens label and marketing claims and confirms your products and ingredients are completely natural and do not contain cheap synthetic adulterants. By verifying the percentage of our product that comes from natural sources as opposed to artificial, petrochemical sources, you can guarantee your product is genuinely made with natural CBD extract.