Description, effects and risks of cannabis | Gouvernement du Québec

Description and composition of cannabis

Find out more about the composition of cannabis, including tetrahydrocannabinol (THC) and cannabidiol (CBD).

Effects of cannabis

Find out about the effects of cannabis use.

Forms and methods of cannabis use

Find out about the different forms of cannabis, including dried cannabis, cannabis extracts, edible and topical-use products, and the ways they are used.

Health risks of cannabis use

Understand the risks of cannabis use on cognitive skills, physical health and mental health.

Risks associated with methods of cannabis use

Understand the risks of cannabis on health, depending on the way it is used, whether smoked, vaporized, inhaled by vaporization, ingested or used topically.

Lower-risk cannabis use

Reduce the risks that cannabis use can have on you and those closest to you.

Last update: November 30, 2023