The Pennsylvania Department of Health sent emails back in December to registered medical cannabis patients, notifying them of a safety review being conducted on ingredients found in cannabis vape products. According to the Pittsburgh City Paper, the emails the state agency sent out were kind of cryptic; They did not include any information on why they were conducting this review or what exactly patients should be worried about in their vape products.

Then on February 4, the state’s health agency sent a third email. This one notified patients they were recalling more than 650 products and ingredients. “As you know, the Department recently conducted a statewide review of all vaporized medical marijuana products containing added ingredients,” reads the email to patients. “After finishing this review, the Department has determined that certain vaporized medical marijuana products containing some added ingredients have not been approved for inhalation by the United States Food and Drug Administration (FDA).”

While the FDA does approve added ingredients in other products, they don’t really deal with vaping, let alone cannabis. In October of 2021, the FDA did start regulating the space, making their first-ever approval for vaping products with nicotine e-cigarettes. Still though, the FDA has not conducted broad studies on specific vaping ingredients and their effects, so it’s not exactly an authority on what makes a safe cannabis vape product.

Pittsburgh City Paper says they have not received a response from the Pennsylvania Department of Health for requests to comment. The recalls and the state agency’s seemingly impulsive decision and subsequent radio silence leave more questions than answers.