Cannabis edibles typically last between 4 and 12 hours, with most people experiencing the strongest effects around the 2- to 3-hour mark. That’s a wide range, and where you fall depends on the dose, your metabolism, whether you ate beforehand, and your individual genetics. The full timeline, from first bite to feeling completely back to normal, is longer than most people expect.
The Full Effects Timeline
Edibles take 30 to 90 minutes to kick in. Unlike smoking or vaping, which delivers THC through the lungs and into the bloodstream within minutes, an edible has to pass through your digestive system first. The effects build gradually, peak at roughly 2 to 3 hours after eating, and then slowly taper off over the next several hours.
For a standard dose (5 to 10 mg of THC), most people feel the effects for about 6 to 8 hours total. Higher doses, particularly anything above 25 mg, can stretch that window closer to 12 hours. Even after the noticeable high fades, subtle residual effects on memory, processing speed, and reaction time can linger into the next day, especially at higher doses.
Why Edibles Hit Differently Than Smoking
The reason edibles last so much longer comes down to how your body processes THC when you swallow it. Your liver converts THC into a different active compound that crosses into the brain more readily and produces a stronger, longer-lasting effect than THC itself. This is also why edibles tend to feel more intense per milligram than the same amount of THC inhaled.
Oral bioavailability of THC is estimated at around 6%, which sounds low compared to 10 to 35% through inhalation. But that number is misleading. The liver’s conversion process creates that more potent metabolite, so even though less raw THC reaches your blood, what does get through hits harder and sticks around longer. Blood levels of THC after a single edible can remain detectable for up to 22 hours, well past the point where you’d notice any subjective high.
What Changes the Duration
Food in Your Stomach
Eating an edible on an empty stomach means faster onset and a more intense but shorter experience. Taking it on a full stomach, particularly after a meal with some fat content, slows absorption. The effects come on more gradually, feel milder at peak, and last longer overall. Many people prefer the full-stomach approach for exactly that reason: a smoother, more drawn-out experience rather than a sharp spike.
Your Genetics
About 1 in 4 people carry gene variants that make them slower metabolizers of THC. The key liver enzyme responsible for breaking down THC varies in activity from person to person. If you’re a slow metabolizer, THC stays in your system longer, and its effects are both more pronounced and more prolonged. This is one reason two people can eat the same gummy and have very different experiences. There’s no simple way to know your metabolizer status without genetic testing, but if edibles consistently hit you harder or last longer than they do for friends taking the same dose, slower metabolism is a likely explanation.
Dose and Tolerance
Dose is the most straightforward factor. A 5 mg edible in a new user might produce noticeable effects for 4 to 6 hours. A 50 mg edible can keep someone feeling the effects for 10 to 12 hours, with residual grogginess the next morning. Regular users develop tolerance and typically experience shorter, less intense effects from the same dose.
Sublingual Products Work on a Different Clock
Tinctures and strips placed under the tongue are sometimes grouped with edibles, but they follow a completely different timeline. THC absorbed through the thin tissue under the tongue enters the bloodstream directly, bypassing the liver’s conversion process. Effects begin within a few minutes, peak quickly, and are largely finished within 1 to 2 hours. If you swallow a tincture instead of holding it under your tongue, it behaves like a regular edible with the standard 30- to 90-minute onset and multi-hour duration.
How Long Edibles Show on a Drug Test
The high from an edible and the detection window for a drug test are two very different things. Standard urine tests look for a THC breakdown product that your body eliminates slowly. After a single edible dose, this metabolite peaks in urine at around 9 hours and can remain detectable for up to 30 days in regular users. In blood, THC itself is typically detectable for 2 to 12 hours, though one study found blood levels measurable up to 22 hours after a single brownie containing 50 mg of THC. Drug tests don’t distinguish between edibles and smoked cannabis, so the same general detection windows apply regardless of how you consumed it.
The “Day After” Effect
Even after the obvious high wears off, edibles can leave a residual footprint on cognitive performance. Research on these lingering effects shows mild but measurable impairments in learning, memory, and executive function that can persist for at least 12 hours after the intoxication phase ends. For a high-dose edible taken in the evening, this means you could still be slightly off your baseline the next morning. The effect is subtle enough that many people don’t notice it, but it’s worth factoring in if you’re planning to drive, work, or do anything requiring sharp focus the following day. People who started using cannabis in adolescence appear more susceptible to these residual effects than those who began as adults.