Edible duration by dose: the short answer
A 5 mg THC edible lasts about 4 to 6 hours. A 10 mg edible lasts about 6 to 8 hours. A 20 mg edible can last 8 to 12 hours. Effects start in 30 to 90 minutes for many people. Peak effects arrive at 2 to 4 hours.
These ranges are not fixed. Dose is one input. Liver enzymes, tolerance, food in the stomach, and the product recipe change the timeline. A 10 mg gummy and a 10 mg brownie can act on different schedules.
Typical duration by dose
- 2.5 mg THC: 3 to 5 hours. Start range for new users.
- 5 mg THC: 4 to 6 hours. Onset 45 to 90 minutes.
- 10 mg THC: 6 to 8 hours. Standard serving in many US states. Peak at 2 to 4 hours.
- 20 mg THC: 8 to 12 hours. Side effects rise at this dose.
- 50 mg THC and above: 10 to 16 hours. Impairment can last past the felt high.
Onset, peak, and total time
Edibles pass through the stomach and liver before THC reaches the blood. This delay sets them apart from inhaled cannabis. Onset runs 30 to 90 minutes. Peak blood levels land at 2 to 4 hours. The total effect window runs 4 to 12 hours by dose.
Food changes onset. A meal with fat can speed absorption for some products. A full stomach can slow it. Product type matters too. Gummies, chocolates, baked goods, and drinks use different carriers and doses.
Cannabis Edible Effects Timeline
What shifts the timeline
- Liver metabolism: CYP2C9 and CYP3A4 enzymes break down THC. Genetic differences change the rate.
- Tolerance: Daily users can feel less from the same dose. Duration may shorten.
- Body weight and body fat: THC stores in fat. This can extend release and detection windows.
- Product label accuracy: Tests find dose variance in some products. A 10 mg label may not match the piece.
Dose steps for a new user
- Start with 2.5 mg THC or less.
- Wait at least 2 hours before a second dose.
- Record the time, dose, and effect.
- Keep the same dose for 2 to 3 sessions before you raise it.
CDC guidance says wait at least 2 hours after an edible before taking more. This wait covers the delay between swallowing and peak effects.
When duration runs long
A long edible effect can include anxiety, fast heart rate, and nausea. These effects link to dose and tolerance. High doses above 20 mg raise the risk. If effects last past 12 hours, contact a poison control center or a clinician.
Do not drive until the effect ends. Edible impairment can last after the felt high fades. Label laws and serving caps vary by state. Check the package for total THC per piece, not just per package.