A 5 mg THC edible typically produces effects that last 6 to 8 hours from start to finish. That’s significantly longer than smoking or vaping, which usually wear off in 1 to 3 hours. The timeline breaks down into distinct phases: a slow onset, a peak around the 3-hour mark, and a gradual tapering off that can leave you feeling slightly different well into the evening or even the next morning.
The Full Timeline, Hour by Hour
Most people start to feel a 5 mg edible somewhere between 30 and 60 minutes after eating it, though it can occasionally take up to 90 minutes. This slow onset is one of the biggest differences between edibles and inhaled cannabis, and it’s the reason so many people make the mistake of taking a second dose too soon.
Effects build gradually from that first hour, reaching their peak intensity around 3 hours after you swallow the edible. This is when blood levels of THC and its active byproducts are highest. From there, the high slowly tapers. Most people feel essentially back to normal by the 6- to 8-hour mark, though a faint heaviness or calm can linger beyond that window.
For a practical example: if you eat a 5 mg gummy at 7 p.m., you might first notice something around 7:45, feel the strongest effects between 9:30 and 10:30, and be mostly back to baseline by 1 or 2 a.m.
Why Edibles Last So Much Longer
When you eat cannabis, THC passes through your digestive system and into the liver before reaching your brain. The liver converts THC into an active byproduct that is equally potent, or even more potent, than THC itself. This is called first-pass metabolism, and it’s the key reason edibles hit differently than smoking.
After oral ingestion, blood levels of this active byproduct are significantly higher than they would be from inhaling the same amount of THC. Both THC and its byproduct are fat-soluble, meaning they dissolve into fatty tissues throughout your body, including your brain and fat stores, and then release slowly back into your bloodstream over time. That slow release is what stretches the experience across so many hours compared to the quick spike and drop you get from smoking.
What 5 mg Actually Feels Like
A 5 mg dose sits at the boundary between “low” and “moderate” in most dosing frameworks. For someone with little or no cannabis tolerance, 5 mg typically produces mild euphoria, gentle relaxation, and a slightly uplifted mood. Most people at this dose remain clear-headed enough to hold a conversation, follow a movie, or move around the house comfortably. It’s widely considered a good starting dose for beginners, and some states set their non-intoxicating threshold at just 2.5 mg per serving.
For regular cannabis users, 5 mg may feel quite subtle or barely noticeable. Tolerance plays an enormous role. Someone who consumes edibles several times a week might need 15 to 25 mg to reach the same level of effects that a newcomer gets from 5 mg. This also means the duration can feel shorter for experienced users, not because the THC leaves the body faster, but because the perceptible effects fade below the threshold of awareness sooner.
Factors That Change How Long It Lasts
The 6-to-8-hour range is an average, and your personal experience can fall outside it in either direction. Several things influence where you land.
- Body composition: THC byproducts bind to fat molecules. People with a higher body fat percentage may store more THC in fatty tissue, which can extend the tail end of the experience as it slowly releases back into the bloodstream.
- Metabolism: A faster metabolic rate processes and eliminates THC more quickly. Two people of similar size can have noticeably different experiences based on how efficiently their liver handles the conversion.
- Stomach contents: Taking an edible on an empty stomach generally leads to faster onset because there’s less material competing for absorption. A full stomach, especially one with fatty foods, may slow the onset but can also increase the total amount of THC your body absorbs, potentially intensifying and extending the effects.
- Tolerance: Regular users metabolize THC more efficiently and have desensitized receptors, so the perceptible window of effects shrinks even if the compound is technically still present in the body.
The Next-Day “Hangover” Effect
Some people report feeling slightly groggy or foggy the morning after taking an edible, even a low dose like 5 mg. Research on this is mixed. A 2023 review found that some studies documented next-day cognitive effects after THC use, while many others did not. A 2019 study linked cannabis use to daytime fatigue the following day, and if blood levels of THC remain elevated by morning, a person can still feel mildly high.
At 5 mg, next-day effects are less likely than they would be at higher doses, but they’re not impossible, especially for someone with low tolerance or a slower metabolism. If you’re trying edibles for the first time, taking them earlier in the evening gives your body more hours to process the THC before you need to be sharp the next day. Taking a 5 mg edible at 10 p.m. and expecting to feel completely normal at 6 a.m. is a gamble for some people, even if the main high has clearly passed.