Edibles are the slowest way to take cannabis, and the wait is where most bad experiences begin. Health Canada puts the start at 30 minutes to 2 hours, so a gummy that seems to be doing nothing at 45 minutes is usually just not there yet. Here are the official timings, why eating is different from smoking, and how Canada's 10 mg limit fits in.
How long do edibles take to kick in?
Health Canada says effects from eating or drinking cannabis can begin within 30 minutes to 2 hours, with the strongest effects after 2 to 4 hours. Smoking or vaping starts in seconds or minutes by comparison.
The Ontario Cannabis Store gives a slightly wider window and says effects from infused products can be delayed by anywhere from 30 minutes up to three hours. Treat the ranges as a guide, not a stopwatch. Your own timing can land anywhere inside them, or a little outside.
For the full picture of how long the effects last across every method, see how long does a high last.
| Eating or drinking | Smoking or vaping | |
|---|---|---|
| Effects may start | Within 30 minutes to 2 hours | Within seconds to minutes |
| Strongest effects | After 2 to 4 hours | After 10 to 30 minutes |
| Effects may last | 4 to 8 hours | 2 to 4 hours |
| Some impairment may remain | Up to 24 hours | Up to 24 hours |
Why do edibles take so much longer than smoking?
Because the THC has to be swallowed, digested and processed before it reaches your bloodstream. Inhaled THC goes from the lungs into the blood within minutes, while an edible goes through the stomach and gut first.
Health Canada's guidance on cannabis products notes that edibles take longer to work and that the effects can last longer than inhaled cannabis. That slower, longer curve is the whole reason edibles are easy to misjudge.
How fast you feel it also depends on the person. The Ontario Cannabis Store lists body weight, sex, food eaten beforehand and metabolic rate as factors that change how strong an edible feels and how long it lasts. Two people can eat the same gummy and have different afternoons.
Why do edibles feel different from smoking? The liver and 11-hydroxy-THC
When THC is eaten, a large share of it passes through the liver before it circulates around the body. A review of human cannabinoid pharmacokinetics in the journal Chemistry & Biodiversity describes significant first-pass metabolism in the liver, which converts part of the THC into a compound called 11-hydroxy-THC (11-OH-THC).
That same review lists 11-OH-THC as an active metabolite of THC, meaning it is itself psychoactive. The paper also reports that the share of an oral dose that reaches the blood is low and variable, in the range of 4 to 20 percent compared with a dose given directly into a vein.
In plain terms, eating cannabis isn't just a slower version of smoking. The body handles the THC differently, and the amount that ends up in your system can vary a lot from person to person and from meal to meal. This is a description of how the body processes THC, not a prediction of how any one edible will feel for you.
Smoking and vaping skip this liver step, because inhaled THC goes from the lungs straight into the blood. That is one reason the same amount of THC can feel different depending on how it is taken.
What does "start low, go slow" mean for edibles?
Start low means beginning with a small dose of THC. Health Canada suggests looking for products with 2.5 mg of THC or less. Go slow means waiting long enough to feel the full effect before eating more, and given the timing above, that wait is measured in hours, not minutes.
Health Canada also says higher doses of THC make unwanted side effects more likely. Smaller, spaced-out doses give you room to stop when you have had enough, which is not possible once the whole package has been eaten.
Plan the day around the long tail too. Effects can run 4 to 8 hours, and some impairment can linger up to 24 hours, so an edible is not something to take before driving or other tasks that need a clear head. Our greening out guide covers the signs of taking too much and what to do about it.
What is the legal limit of THC in edibles in Canada?
Under the Cannabis Regulations, a package of edible cannabis can contain no more than 10 mg of THC in total. That cap applies to the whole package, not to each piece, so a package with several gummies splits those 10 mg between them.
Packages also show the THC amount, so you can work out an approximate per-piece dose by dividing by the number of pieces.
A few things worth knowing about the number on the package:
- The 10 mg limit is per package, so a single-serving product and a ten-piece pack carry the same maximum.
- Per-package and per-serving THC are both on the label. Our guide to reading cannabis labels shows where to find them.
- The limit applies to licensed products. A homemade edible has no label and no lab test, so its strength is unknown. See how to make cannabutter for why.
Why shouldn't you take more if an edible isn't working yet?
Because the first dose may simply still be on its way. If you eat more at 45 minutes, both doses can land together at the 2 to 4 hour peak, and then the effects can last for hours with no way to cut them short.
The Ontario Cannabis Store says to wait at least two hours to see how an edible affects you before ingesting more. Health Canada's advice is the same in spirit: wait to feel the full effects before taking more.
If you still feel nothing after a couple of hours, that is the point to consider a small extra dose, not before. Keep the amount modest, because the first dose can still be building.
What can change how fast an edible works?
Several everyday things can shift the timing, and none of them are fully predictable. The Ontario Cannabis Store names body weight, sex, food eaten beforehand and metabolic rate.
Edibles that are sold as something you hold in the mouth, like lozenges and sprays, follow a different timeline from ones you swallow. Health Canada lists a start within 15 to 40 minutes for products held under the tongue, so don't assume every infused product behaves like a gummy.
The practical takeaway is simple. Don't rely on a past experience with a different product, a different batch or a different day. Treat each new edible as new, and start with a small amount again.
What should you do if an edible is stronger than you wanted?
Stay somewhere safe and calm, and remember the effects will pass. Health Canada's range for an edible is up to 8 hours, so be ready to wait. Water, a snack and a trusted person nearby help.
Don't drive. Health Canada warns that impairment can last up to 24 hours after eating cannabis. If you or someone with you seems seriously unwell, call 911 or your local emergency number, or contact your poison centre for advice.
Keep edibles locked up and out of sight of children and pets. Health Canada notes that cannabis edibles can look like regular candy or baked goods, so store them where children and pets cannot reach them.
Sources: canada.ca, canada.ca, ocs.ca, pmc.ncbi.nlm.nih.gov, laws-lois.justice.gc.ca, canada.ca












