A cannabis high typically lasts 1 to 3 hours when smoked or vaped, and 6 to 8 hours when eaten as an edible. The actual duration depends heavily on how you consume it, how much you use, and your individual tolerance. Here’s what to expect from each method and the factors that shift the timeline.
Smoking and Vaping
Inhaling cannabis produces the fastest onset. Effects begin within minutes because THC passes through your lungs directly into your bloodstream. The high peaks almost immediately after consumption and generally lasts 1 to 3 hours, though lingering effects can stretch up to 8 hours in some cases.
Concentrates like dabs and wax hit harder and faster than traditional flower because they contain much higher levels of THC. Despite the intensity, the high from concentrates can actually fade sooner than flower. Smoking regular cannabis tends to come on a bit slower but lingers longer, making the two experiences feel quite different even though both are inhaled.
Edibles Take Longer to Hit and Last Much Longer
Edibles follow a completely different timeline. When you swallow a gummy, brownie, or capsule, it has to pass through your digestive system and get processed by your liver before THC reaches your brain. That journey takes 30 to 60 minutes on average, though some people don’t feel anything for up to 90 minutes. This delay is the main reason people accidentally take too much: they assume the first dose didn’t work and eat more before the effects arrive.
Once an edible kicks in, the high peaks around the 2 to 3 hour mark and lasts 6 to 8 hours total. The liver converts THC into a more potent form during digestion, which is why edible highs feel stronger and more full-body compared to smoking. Your metabolism, weight, sex, diet, and cannabis tolerance all influence how quickly you feel it and how long it sticks around.
Tinctures and Sublingual Products
Cannabis oils and tinctures held under the tongue split the difference between smoking and edibles. THC absorbs through the thin tissue under your tongue and enters your bloodstream directly, bypassing the digestive system. Effects start within 5 to 10 minutes, peak at 30 to 45 minutes, and wear off within 1 to 2 hours.
Products like cannabis lozenges, gum, and lollipops work similarly. As long as they dissolve in your mouth rather than being swallowed, absorption happens through the mucous membranes and the onset is faster than a traditional edible. If you chew and swallow a lozenge quickly, though, it follows the slower edible timeline instead.
What Makes a High Last Longer or Shorter
Several factors push the duration in either direction:
- Dose and potency: Higher THC content produces a longer-lasting high. A single hit of low-potency flower fades faster than multiple hits of a high-THC strain.
- Tolerance: Regular users metabolize THC more efficiently. Someone who uses cannabis daily will feel a shorter, less intense high from the same dose compared to an occasional user.
- Body composition: THC is fat-soluble, so body fat percentage affects how it’s stored and released. People with higher body fat may experience slightly prolonged effects.
- Food intake: Eating a fatty meal before consuming cannabis (especially edibles) can increase absorption and extend the high.
- Metabolism: Faster metabolisms process THC more quickly, shortening the experience.
The Next-Day Hangover Effect
Even after the high itself is gone, some people feel residual effects the next day. Common complaints include fatigue, brain fog, dry mouth, dry eyes, headaches, and mild nausea. This “weed hangover” isn’t universal, and there’s no set duration for it. Higher doses, stronger products, and lower tolerance all make next-day symptoms more likely. In some cases, THC levels in the blood remain high enough the following morning that a person still feels mildly intoxicated.
How Long Before You’re Safe to Drive
The high may feel like it’s over well before your reaction time and judgment fully recover. Research suggests most cognitive effects clear between 5 and 7 hours after inhaling cannabis, but current safety guidelines recommend waiting 6 to 8 hours after smoking or vaping, and 8 to 12 hours after eating an edible, before getting behind the wheel. Differences in potency and individual response make it difficult to set a single cutoff, so erring on the longer side is the safer choice.