Colorado issues health and safety notice over marijuana with yeast and mold

February 8, 2026 - 15:45

State health officials have issued a public health and safety advisory after discovering numerous batches of marijuana contaminated with yeast and mold. The affected products were sold in at least 31 retail stores across Colorado over a recent two-and-a-half month period.

Consumption of marijuana with microbial contamination can pose serious health risks, particularly for individuals with compromised immune systems, lung disease, or certain allergies. Potential adverse effects include respiratory infections, allergic reactions, and other illnesses. The notice serves as a critical warning for consumers who may have purchased these products.

While specific brand names were not released in the general advisory, the state is directly notifying the involved medical dispensaries and retail stores. These businesses are required to contact customers who purchased the identified batches. Health officials are urging consumers who experience health issues they believe are linked to marijuana use to consult a healthcare provider and report the incident to the state. The advisory underscores the importance of regulatory oversight in the legal cannabis market to ensure product safety for all consumers.