As a legal product, cannabis can be used recreationally, and some choose to use it for medical purposes. If you are thinking about using cannabis to help with a physical or mental health concern, speak to your health care provider to review all possible treatment options and potential interactions to help decide what’s best for you.
Cannabis is one of the most commonly used drugs in Canada. Our HealthSTATS website has more details on local use.
The effects of cannabis you might experience depends on who you are: your age, your health and your family’s medical history. It also depends on the product you’re using. There are varying strengths in all products. If you are choosing to use cannabis it is important for you to know what you are using, how strong it is, and how long the effects might last. It is also important to consult with your healthcare provider or pharmacist if you are taking any prescription, non-prescription and/or herbal products to ensure that there are no negative drug interactions.
There is a growing body of research into the active ingredients in cannabis, how they affect the mind and their potential medical benefits. Studies are also building a better picture of the
harms that can happen from using cannabis such as injury, damage to the developing brain, and increased likelihood for major mental health disorders. Think about your personal risks and if you choose to use cannabis, learn about safer ways to use. See
Canada’s Lower-Risk Cannabis Use Guidelines for more information.
Know the law! Be aware that each province and municipality across Canada can have different by-laws and laws related to cannabis. Know the municipal, provincial, federal cannabis laws before you buy, possess, or consume it. The Smoke-Free Ontario Act, 2017, prohibits smoking or vaping cannabis in Ontario wherever it is illegal to smoke commercial tobacco products or vape.
Canada has set rules about buying, possessing, and growing cannabis.
Ontario has set rules about where it can be used or purchased, as well as other regulations.
For local information about the Smoke-Free Ontario Act, 2017 and cannabis please visit
SMDHU's Smoke-Free Ontario Act, 2017 page.
For more information explore the cannabis topics on the left.
