Cannabis withdrawal timeline: symptoms, peak and how long it lasts
Cannabis withdrawal is real — but widely underestimated, because cannabis has a reputation for being mild. After heavy, prolonged use, stopping typically produces a cluster of symptoms within about a week: irritability, anxiety, insomnia, appetite loss, restlessness and low mood, plus at least one physical symptom.1
The reassuring part: it follows a short, predictable timeline — onset within 24 hours, a peak around day 3, and resolution within about two weeks.1 Here is what to expect.
Last reviewed July 6, 2026
The cannabis withdrawal timeline
- First 24 hours
Onset — irritability and restlessness
Withdrawal usually begins within 24 hours of the last use: irritability, anxiety and restlessness are often the first signs, especially in the evening when you would normally use.1
irritabilityanxietyrestlessness - Days 2–3
The peak
Symptoms typically peak around day 3. Sleep problems are often at their worst here — trouble falling asleep and vivid, disturbing dreams — alongside low mood and strong cravings.1
insomniavivid dreamslow moodcravings - First week
Appetite loss and the fog
Decreased appetite (sometimes with weight loss), poor concentration and a general flatness are common through the first week. Higher-potency products and concentrates are linked to stronger dependence and a rougher withdrawal, in a dose-response pattern.1
appetite losspoor concentration - Weeks 1–2
Steady improvement
Most symptoms ease steadily and resolve within about two weeks of quitting. Because THC is stored in fat and released slowly, the tail of withdrawal can feel drawn out — but the direction is consistently better.1
improving - Beyond 2 weeks
Sleep can lag behind
Lingering sleep disturbance is the symptom most likely to outlast the rest, sometimes persisting for a few extra weeks. If insomnia drags on, it is worth addressing on its own rather than relapsing to fix it.1
lingering insomnia
Why cannabis withdrawal happens
Repeated heavy use downregulates the brain's CB1 cannabinoid receptors, producing tolerance — you need more to feel the same effect. When you stop, reduced endocannabinoid tone plus stress-system overactivity drives the irritability, anxiety and insomnia of withdrawal.1 It is the same tolerance-and-withdrawal loop as other drugs, just milder than most.
A substantial proportion of regular users develop cannabis use disorder, and risk climbs with higher-potency products (above roughly 15–20% THC), concentrates like oils and distillates, and use that starts young.12
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Common cannabis withdrawal symptoms
Withdrawal after heavy use typically means three or more of the following within about a week of stopping:1
- Irritability, anger or aggression
- Anxiety or nervousness
- Sleep difficulty — insomnia and disturbing dreams
- Decreased appetite or weight loss
- Restlessness
- Depressed mood
- Physical symptoms such as abdominal pain, shakiness, sweating, fever, chills or headache
Common questions
How long does cannabis withdrawal last?
Onset is usually within 24 hours of stopping, symptoms peak around day 3, and most resolve within about two weeks — though sleep problems can linger a little longer.1
Is weed withdrawal real?
Yes. After heavy, prolonged use, stopping produces a recognized withdrawal syndrome — irritability, anxiety, insomnia, appetite loss, restlessness and low mood — severe enough to be a diagnostic criterion for cannabis use disorder.1
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Keep reading
Sources
This guide is educational and is not medical advice. Timelines vary from person to person. If you are quitting heavy alcohol use, or have a medical condition, talk to a doctor before you stop — some withdrawals can be dangerous. In the US you can reach the free, confidential SAMHSA National Helpline at 1-800-662-4357, or call or text 988.