Cannabis edibles typically last 4 to 12 hours, with most people feeling the strongest effects between 2 and 3 hours after eating them. That’s significantly longer than smoking or vaping, which usually wear off within 1 to 3 hours. The reason comes down to how your body processes THC when it’s eaten rather than inhaled.
Why Edibles Last So Much Longer
When you smoke cannabis, THC enters your bloodstream through your lungs and reaches your brain within minutes. Edibles take an entirely different route. THC travels through your stomach, into your intestines, and then to your liver before it ever reaches your brain. In the liver, enzymes convert THC into a different compound called 11-hydroxy-THC, which crosses into the brain more efficiently and produces a stronger effect. Preclinical research suggests this converted compound is 2 to 7 times more psychoactive than the THC you’d get from smoking.
This liver processing, called first-pass metabolism, is also why the whole experience is stretched out. Your digestive system releases THC slowly into the bloodstream over several hours rather than delivering it all at once. The result is a longer, more gradual high with a slower comedown.
The Full Timeline
Here’s what a typical edible experience looks like from start to finish:
- Onset: 30 to 90 minutes after eating, though some people don’t feel anything for up to 2 hours.
- Peak effects: 2 to 3 hours after consumption. This is when the high feels strongest.
- Main effects fade: 4 to 8 hours for most doses.
- Residual effects: Some grogginess, altered mood, or mild impairment can linger up to 24 hours after a higher dose.
The Government of British Columbia’s public safety guidance notes that intoxicating effects can last up to 12 hours, with residual effects potentially carrying into the next day. This is worth keeping in mind if you have responsibilities the following morning.
What Changes the Duration
The 4-to-12-hour range is wide because several factors push you toward one end or the other.
Dose
This is the single biggest factor. A 5 mg edible will produce a shorter, milder experience than a 25 mg one. Higher doses mean more THC for your liver to process, which extends the timeline considerably. Most of the reports of effects lasting 12 hours or longer involve doses on the higher end.
Your Stomach
Eating an edible on an empty stomach means faster onset and stronger effects, because there’s nothing competing for absorption. On a full stomach, the edible takes longer to kick in, the effects tend to feel milder, and the overall experience stretches out longer. If you’re sensitive to edibles, eating a meal beforehand can soften the intensity. If you take them on an empty stomach, cutting your usual dose in half is a reasonable adjustment.
Your Genetics
The liver enzyme responsible for converting THC into its more potent form varies from person to person based on genetics. About 10 to 15 percent of the population carries gene variants that make this enzyme less functional. These people may feel weaker effects from edibles regardless of dose, because their liver isn’t efficiently producing the compound that makes edibles hit hard. On the flip side, people with highly active versions of this enzyme may feel stronger, longer-lasting effects from the same dose.
Tolerance and Body Composition
Regular cannabis users build tolerance over time and generally experience shorter, less intense effects from the same dose. Body fat percentage also plays a role, since THC is fat-soluble and gets stored in fatty tissue. People with higher body fat may experience a longer tail of mild effects as THC is slowly released from fat stores.
Sublingual Products Work Differently
Not all edibles follow the same timeline. Products designed to absorb under the tongue, like tinctures, mints, and hard candies you dissolve in your mouth, bypass the stomach and enter the bloodstream directly through the tissues in your mouth. These kick in within a few minutes and absorb at roughly 30 to 50 percent efficiency, compared to just 6 to 15 percent for standard edibles that go through the digestive tract. The tradeoff is that sublingual products generally don’t last as long, since they skip the slow digestive release that gives traditional edibles their extended duration.
If you want faster onset and a shorter experience, sublingual products are closer to what you’d expect from smoking. If you want the long, sustained effect that people associate with edibles, gummies, baked goods, and chocolates that you chew and swallow are the ones that deliver it.
How Long THC Stays Detectable
The effects wearing off and THC leaving your body are two very different things. Even after you feel completely normal, THC metabolites remain in your system and can show up on drug tests. After a single use, you can expect a positive urine test for about 3 to 4 days at the standard screening threshold. At more sensitive testing cutoffs, that window extends to about 7 days. Frequent users can test positive for weeks or even longer, since THC accumulates in fat tissue with repeated use.
Storing Edibles for Consistent Potency
If you’re spacing out your edible use over weeks or months, storage matters. THC breaks down when exposed to heat, light, and oxygen. Edibles stored in a cool, dry place between 60 and 70°F retain their potency for 6 to 12 months. Freezing them slows degradation even further. Edibles left in warm, humid conditions or direct sunlight lose potency faster, which can make dosing unpredictable. An edible that was 10 mg six months ago might hit like 7 mg if it’s been sitting on a sunny counter.