A cannabis high from smoking or vaping typically lasts 1 to 3 hours, while edibles can keep you high for 6 to 8 hours. The exact duration depends on how you consumed it, how much you took, and your individual biology. Here’s what to expect for each method and what affects the timeline.
Smoking and Vaping: 1 to 3 Hours
When you inhale cannabis, whether through a joint, pipe, bong, or vape pen, THC enters your bloodstream almost instantly. You’ll feel the effects within minutes, and they peak around 10 to 15 minutes after your first hit. The main high typically lasts 1 to 3 hours, though lingering effects can stretch up to 4 hours depending on how much you consumed.
Concentrates like dabs, wax, or shatter hit harder and faster because they contain far more THC than flower. The intense peak tends to be shorter, often around 15 to 20 minutes, followed by a milder high that tapers off over a couple of hours. Flower produces a less intense but more sustained peak before fading more gradually.
Edibles: 6 to 8 Hours
Edibles take a completely different path through your body. Instead of hitting your lungs and entering the bloodstream directly, THC passes through your digestive system and gets processed by your liver. This means the onset is much slower: expect 30 to 60 minutes before you feel anything, sometimes longer on a full stomach.
Peak effects from edibles don’t arrive until about 3 hours after you eat them. That long ramp-up is why people sometimes make the mistake of taking a second dose before the first one kicks in. The total high generally lasts 6 to 8 hours, and impairment can persist even longer. THC drinks and tinctures fall somewhere in between, with effects lasting up to about 6 hours.
Why Your High Might Last Longer Than Expected
Several factors push the timeline longer or shorter. Dose is the most obvious: more THC means a longer high. But your genetics play a surprisingly large role too. About one in four people carry a gene variant that causes their enzymes to break down THC less efficiently than average, according to research from the Medical University of South Carolina. If you’re one of them, you’ll feel stronger effects that last longer from the same dose as someone else.
Other factors that extend duration include eating edibles on an empty stomach (faster absorption, more intense effects), using high-potency products, and being relatively new to cannabis. Regular users develop tolerance, which shortens and dulls the experience. Body fat percentage also matters because THC is fat-soluble and gets stored in fatty tissue, which can subtly extend how long traces remain active in your system.
Residual Effects After the High Fades
Even after you no longer feel “high,” some impairment can linger. A systematic review of published research found that cognitive effects like slowed reaction time, reduced working memory, and difficulty multitasking can persist for 3 to 10 hours after THC exposure. The range depends on dose, consumption method, and how often you use cannabis. Higher doses and oral consumption (edibles) sit at the longer end of that window.
The good news is that true next-day effects appear to be minimal. Unlike alcohol, which reliably impairs cognitive performance the morning after heavy use, cannabis has little high-quality evidence supporting a meaningful “weed hangover.” Some people report grogginess or brain fog the next day, but controlled studies haven’t consistently confirmed measurable impairment once 12 or more hours have passed.
How Long to Wait Before Driving
Colorado’s Department of Transportation, drawing on years of data from a legal cannabis market, recommends waiting at least 4 hours after smoking, vaping, or dabbing before driving. After edibles, the recommendation jumps to at least 8 hours. For THC drinks or tinctures, wait at least 6 hours. These are minimums. If you consumed a high dose or still feel any effects, wait longer.
If Your High Feels Too Strong
There’s no proven way to instantly end a high, but a few approaches may take the edge off. CBD can block some of the receptors THC activates in the brain, potentially reducing feelings of intoxication, anxiety, and racing heartbeat. If you have CBD oil or a high-CBD product available, it’s the most plausible option.
Some people swear by chewing black peppercorns, sniffing or squeezing lemon peel, or eating pine nuts. These foods contain terpenes (aromatic plant compounds) that interact with some of the same brain pathways as THC. Peppercorns contain beta-caryophyllene, which may reduce anxiety and improve mental clarity. Lemons contain limonene, and pine nuts contain both pinene and limonene. The evidence for all of these is mostly from animal studies or anecdotal reports, not rigorous human trials, but they’re safe to try and many people find them helpful.
Beyond that, the basics apply: move to a calm, comfortable environment, drink water, eat a light snack, and remind yourself the feeling is temporary. Distraction helps. Sleep is the most reliable way to ride it out. No matter how intense it feels, a cannabis high will always end on its own.