An adulterated product contains something other than, or in addition to, what it claims. Health Canada says drugs produced illegally are not tested and may contain other dangerous substances, and CAMH warns that unregulated hallucinogens may include toxins or not contain the drug they are sold as.
Mushroom products show the problem. FDA tests of a recalled US line of mushroom chocolates, cones and gummies found muscimol, a synthetic psilocin-like drug, psilocin, the prescription drug pregabalin and kava compounds, varying from sample to sample (FDA). A 2025 study of 12 psilocybin edibles found no psilocybin in any of them (van Breemen et al., 2025).
Hidden ingredients also hide combinations. An analysis of US poison-centre data for 2023–2024 linked polysubstance exposures from mushroom edibles to hospital admission and more severe toxicity (Jorgenson et al., 2026). A person cannot know what they are mixing if they do not know what a product contains.
General information, not medical advice. In an emergency in Canada, call 911. For a mental-health crisis, call or text 9-8-8.
Sources
- Health Canada: Psilocybin and psilocin (magic mushrooms)
- FDA: Investigation of illnesses, Diamond Shruumz-brand products
- van Breemen et al. (2025), Active constituents of psilocybin mushroom edibles
- CAMH: Hallucinogens
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