Health Canada is warning consumers about the risks associated with “synthetic marihuana†products sold in Canada, which are typically products containing plant material that has been sprayed or coated with synthetic cannabinoids. These products are often marketed as “smokeable herbal incenseâ€, “exotic herbal incenseâ€, “legal highs†or as alternatives to marihuana, and are believed to be smoked by consumers for their cannabis-like effects, despite the fact that they are often labelled as “not for human consumptionâ€.
These products may be available for sale at some convenience stores, specialty tobacco stores and head shops. Health Canada does not recommend consuming any of these products as they are rarely labelled with an accurate ingredient list and consuming them may lead to adverse health effects. Effects that have been reported following the use of these products include restlessness, agitation, dizziness, anxiety/panic attacks, memory loss, acute psychosis, seizures, rapid or irregular heartbeat, high blood pressure, shortness of breath, chest pain, changes in blood sugar and electrolyte levels, and nausea/vomiting.
Products containing ingredients that are similar synthetic preparations of cannabis are regulated under the Controlled Drugs and Substances Act (CDSA). All activities associated with them, (e.g., production, distribution, import, export, etc.) are illegal in Canada. Law enforcement is authorized to seize these products at points of entry and/or remove them from retail outlets.
Products affected
Examples of products that should be avoided include: “IZMSâ€, “Herbal Highsâ€, “Spiceâ€, “K2â€, “Yucatan Fireâ€, “Earth Impactâ€, “London Undergroundâ€.
Consumers should note that this is not a definitive list as new “synthetic marihuana†products appear on the market on a regular basis.
What you should do
Do not purchase or consume products labelled as “synthetic marihuanaâ€, “smokeable herbal incense†or “legal highâ€. Consuming these products may lead to adverse health effects and it is illegal if they contain ingredients that are similar synthetic preparations of cannabis, which are regulated under the Controlled Drugs and Substances Act (CDSA).
Consumers who have these products in their possession should contact their legal counsel for advice on how to properly dispose of them.

