How Long Do Edibles Stay in Your System?

Quick Answer

The effects of a cannabis edible usually last 6–8 hours, sometimes lingering up to 12 hours. But THC and its metabolites stay in your body much longer. Depending on the test, THC is detectable for about 1–3 days in blood, up to 30 days in urine, and as long as 90 days in hair follicles.

THC Detection Windows by Test Type

Test Type	Detection Window
Blood	1–3 days (up to 7 for heavy use)
Saliva	1–3 days
Urine (occasional use)	3–7 days
Urine (frequent/daily use)	10–30+ days
Hair follicle	Up to 90 days

How Long the Effects Last

Unlike smoking, edibles must pass through the digestive system before THC reaches the bloodstream. Effects typically begin 30 minutes to 2 hours after eating, peak around 2–4 hours, and fade over 6–8 hours. Because the liver converts THC into a stronger, longer-lasting compound (11-hydroxy-THC), edible highs often feel more intense and last longer than smoking.

Why Detection Lasts So Long

THC is fat-soluble, meaning it's stored in the body's fat cells and released slowly over time. This is why urine tests—which detect THC metabolites rather than active THC—can show positive results long after the effects wear off, especially in regular users.

Factors That Affect How Long THC Stays

• Frequency of use — Daily users store more THC and clear it more slowly.
• Dose and potency — Higher-dose edibles take longer to clear.
• Body fat — More fat tissue stores more THC.
• Metabolism — Faster metabolism clears THC sooner.
• Hydration and activity — Influence how quickly metabolites leave the body.

Can You Speed Up Clearance?

There is no reliable way to quickly flush THC from your system. Time is the only dependable factor. Staying hydrated, exercising, and eating a healthy diet may modestly support your metabolism, but detox drinks and kits are not proven to beat a properly administered drug test. Because THC is stored in fat, sudden intense exercise right before a test may even briefly raise blood levels.

Health and Safety Notes

Edibles are easy to overconsume because effects are delayed—waiting for the high can lead people to take more too soon. Start with a low dose (2.5–5 mg THC) and wait at least 2 hours before taking more. Keep edibles locked away from children and pets, since accidental ingestion is a common cause of emergency visits.

When to Seek Medical Care

Go to urgent care or call poison control for severe symptoms after edible use, including intense anxiety or panic, a racing or irregular heartbeat, chest pain, vomiting, hallucinations, or extreme confusion. Seek emergency help immediately if a child or pet consumes an edible, or if someone becomes unresponsive or has trouble breathing.