Cannabis products come in many different forms and potencies (strengths). Because of this, it is possible to use too much. Stronger cannabis can lead to harmful side effects. While you cannot fatally overdose from cannabis, it can still be dangerous. If you are trying a cannabis product for the first time, start with a low dose and use it slowly.
The potency of THC in cannabis is often shown as a percentage of THC by weight (or by volume of an oil).
Some strains can have an average as high as 30% THC. Other cannabis products, such as concentrates, oils, and edibles, can have 60% or more. Regular use of high-potency cannabis is linked with potentially dangerous effects such as increased risk of addiction and psychosis.
Overconsumption, or using too much, of cannabis can result in unpleasant effects, including:
If you experience cannabinoid hyperemesis syndrome or another health-related issue from cannabis, there is help available. See our Health & Safety page for more information, call your doctor, or if immediate medical help is needed, call 9-1-1.
Many people know about the immediate psychoactive effect (high) associated with smoking cannabis, but may not know that the effects of edible cannabis products (often called “edibles”) happen much more slowly.
It can take from 30 minutes to 1 hour to begin to feel the effects of edible cannabis, and up to 4 hours to feel the full effects.
The intoxicating effects of edible cannabis products can last up to 12 hours, so you could be affected the next day as well.
Cut edibles in half or quarters, or have fewer sips of a beverage rather than taking the entire serving, to make sure you aren’t taking too much at once.
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