It appears that stomach acid can convert CBD to THC at low levels according to a study in the journal Forensic Toxicology. This has implications for patients and marijuana consumers who consume CBD edibles and must take drug tests for work. It also poses potential problems for DUI’s for folks using “CBD only” edibles.

I have previously told my patients that it was OK to take CBD products orally and that these would not cause a positive on a urinalysis. This can no longer be assumed. This data could have big repercussions for product development for CBD products in the marijuana industry. One of the biggest areas I see would be in the development of CBD transdermal patches as this method of delivery should not convert the CBD to THC.

Here is the link to the original article in the Journal of Toxicology.

Yours in health,

-Dr. Jake Felice,

Addendum:  This conversion has been reproduced from another study from the journal Cannabis and Cannabinoid Research:  “Gastric fluid without enzymes converts CBD into the psychoactive components D9-THC and D8-THC, which suggests that the oral route of administration may in-crease the potential for psychomimetic adverse effects from CBD.”  Clearly more research is needed to see if this may be clinically significant.