A typical cannabis high from smoking or vaping lasts 1 to 3 hours, with effects peaking within the first 30 minutes. Edibles are a different story entirely, often lasting 6 to 8 hours with a much slower buildup. The exact duration depends on how you consume it, how much you take, and how your body processes THC.
Smoking and Vaping: The Fastest, Shortest High
When you smoke or vape cannabis, effects kick in within seconds to minutes. The high typically peaks around 15 to 30 minutes after your first inhale, and most people feel it winding down after 1 to 3 hours. The rapid onset happens because THC passes directly from your lungs into your bloodstream and reaches your brain almost immediately.
Dabbing (vaporizing concentrated cannabis) follows a similar timeline but can feel significantly more intense because concentrates contain far more THC per hit than flower. That intensity can make the high feel longer, even if the pharmacological timeline is roughly the same.
Edibles: Slower Onset, Much Longer Duration
Edibles take 30 to 60 minutes to kick in, sometimes longer. Peak blood levels of THC occur around three hours after you eat an edible, which is when the effects feel most intense. The total high generally lasts 6 to 8 hours, and Colorado’s state guidelines note that effects can stretch up to 10 hours.
The reason edibles last so much longer is the way your body processes them. When you eat THC, it passes through your digestive system and liver before reaching your bloodstream. Your liver converts it into a more potent form that crosses into your brain more effectively and lingers longer. This is also why edibles tend to feel “heavier” or more body-focused compared to smoking.
A common mistake with edibles is taking a second dose because the first one hasn’t kicked in yet. Since onset can take over an hour, doubling up before you feel anything can lead to an unexpectedly intense, prolonged experience.
Tinctures and Sublingual Products
Cannabis tinctures held under the tongue take effect within minutes, similar to smoking. The high is generally shorter than edibles, typically lasting one to two hours. If you swallow a tincture instead of absorbing it under your tongue, it follows the edible timeline instead, taking longer to hit and lasting several more hours.
Why the Same Dose Hits People Differently
Your body composition plays a real role in how long a high lasts. THC is fat-soluble, meaning it gets absorbed into fatty tissues throughout your body. Less than 1% of an administered dose actually reaches your brain. The rest distributes into your lungs, liver, spleen, and especially fat cells, where it can be stored and slowly released over time.
For occasional users, this storage effect is minimal. But with regular use, THC accumulates in fat tissue at striking ratios. After about a month of daily use, fat cells can hold roughly 64 times the concentration of THC found in the brain. This stockpiling is why frequent users sometimes feel lingering effects or why tolerance builds over time. It’s also why THC metabolites can show up on urine tests for weeks or even months after the last use.
Beyond body fat, several other factors influence duration:
- Dose and potency: Higher THC content means a longer, more intense experience.
- Tolerance: Regular users often find the high fades faster because their brain adapts to THC’s presence.
- Metabolism: People who metabolize substances quickly may process THC faster, shortening the window.
- Whether you’ve eaten: Smoking on an empty stomach can intensify effects, while eating an edible with a fatty meal may speed up absorption.
Impairment Lasts Longer Than the High
This is the part most people underestimate. You can stop feeling high well before your coordination, reaction time, and judgment fully return to normal. Colorado’s official guidance recommends waiting at least six hours after smoking less than 35 mg of THC before driving, and at least eight hours after eating less than 18 mg. Higher doses require even longer wait times.
The tricky part is that people under the influence of cannabis consistently overestimate how sober they feel. The National Highway Traffic Safety Administration puts it simply: if you feel different, you drive different. The subjective sense that you’ve “come down” is not a reliable indicator that impairment has cleared.
The Next-Day Hangover
Some people experience hangover-like symptoms the day after using cannabis, particularly after high doses or edibles. Common complaints include fatigue, brain fog, dry mouth, dry eyes, headaches, and mild nausea. These aren’t universal. Many people wake up feeling completely fine, while others feel sluggish for much of the following morning.
There’s no set timeline for how long a cannabis hangover lasts. The form of cannabis, the strength of the dose, and individual tolerance all play a role. Staying hydrated, eating beforehand, and using lower doses all reduce the chances of feeling rough the next day.
Quick Reference by Method
- Smoking or vaping: Onset in seconds to minutes, peaks at 15 to 30 minutes, lasts 1 to 3 hours.
- Edibles: Onset in 30 to 60+ minutes, peaks around 3 hours, lasts 6 to 10 hours.
- Sublingual tinctures: Onset in minutes, lasts 1 to 2 hours.
- Dabs and concentrates: Onset in seconds, similar timeline to smoking but more intense.