MMWR Morb Mortal Wkly Rep
January 9, 2025
Heather L. Walker, Maureen Roland, Steven Dudley et al.
1 citation
Between June and October 2024 in Arizona, severe health outcomes were linked to the consumption of mushroom-based psychoactive microdosing products. The report describes cases of illness associated with these products, highlighting the potential dangers of unregulated psychoactive substances marketed for microdosing.
MMWR Morbidity and Mortality Weekly Report
April 9, 2026
Jelonia T. Rumph, Andrea Winquist, Alyssa N. Troeschel et al.
Eating Diamond Shruumz microdosing chocolate bars was linked to severe poisonings, including higher odds of hospitalization, ICU admission, seizures, and breathing tube placement compared to other mushroom chocolate products. Among 180 cases reported across 34 states from January to October 2024, 73 people were hospitalized, 38 required intensive care, 29 needed intubation, and two died. Eating larger amounts increased the risk. Testing found psychoactive substances such as muscimol, psilocin, and kavalactones in some products. The products were recalled, and consumers were warned of poisoning risks due to variable ingredients and lack of regulatory oversight.