If a “magic mushroom” edible ever took you on a psychedelic trip, you might be in for a surprise. There’s a high chance that what you ate didn’t have any psilocybin—the chemical compound that gives the fungi their “magic.”

In a paper published September 11 in JAMA Network Open , researchers reported that an analysis of 12 magic mushroom gummies and chocolates sold in Portland found no trace of psilocybin. Instead, the edibles contained undisclosed ingredients, including caffeine, cannabis extract, and synthetic psychedelics that haven’t undergone regulatory testing.

“We found no evidence of mushroom compounds of any kind coming from any species,” Richard van Breemen, study co-author and a pharmaceutical sciences expert at Oregon State University, told Scientific American .

This unch

See Full Page