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Weed withdrawal timeline: what to expect day by day

Checked against the sources at the bottom on 2026-10-15. This is general information, not medical advice.

If you used weed every day or close to it and then stopped, the next week or two can be rough. Many people get irritable, sleep badly and lose their appetite. These are withdrawal symptoms, and researchers have tracked them closely enough to sketch a typical timeline. Most of the numbers below come from small studies of heavy users, so read them as a rough guide. Your own timing may differ.

The short answer

In a study that followed 18 daily users through 45 days without weed, withdrawal usually started on days 1 to 3, was strongest on days 2 to 6, and most effects lasted 4 to 14 days (Budney and colleagues, 2003). The authors found the size and timing of these symptoms comparable to tobacco withdrawal.

A 2017 review by Bonnet and Preuss put the usual length at up to 3 weeks. Sleep is often the last thing to settle (Allsop and colleagues, 2015).

Who gets withdrawal

NIDA says withdrawal can happen after stopping or sharply cutting back heavy or long-term use. Under DSM-5, the manual clinicians use to diagnose mental health and substance use conditions, cannabis withdrawal means three or more symptoms that start within about a week of quitting (Bonnet and Preuss, 2017).

How common it is depends on who is studied:

Bonnet and Preuss report that heavier and longer use before quitting predicts stronger withdrawal. Women in treatment have reported more frequent and more severe symptoms than men.

Common symptoms

NIDA lists anger, irritability, aggression, nervousness or anxiety, restlessness, lower appetite or weight loss, depression, insomnia, strange or unsettling dreams, headaches, sweating, stomach pain and tremor.

A 2004 review by Budney and colleagues found the symptoms are mostly emotional and behavioral, with appetite change, weight loss and physical discomfort also reported often.

Day-by-day timeline

Time since last use What studies found
Days 1 to 3 Symptoms usually begin (Budney 2003).
Days 2 to 6 The worst stretch for most people. Bonnet and Preuss describe peaks between the second and sixth day.
Days 7 to 14 Most symptoms in Budney's study had faded by day 14. Sleep changes were still showing up in lab recordings on night 13 (Bolla 2010).
Days 15 to 21 Withdrawal usually ends by about 3 weeks (Bonnet and Preuss 2017).
Around day 28 In a brain imaging study of 30 chronic daily smokers, cannabinoid CB1 receptors in parts of the cortex were about 20% lower than in non-users at the start. In the 14 who were scanned again, levels were back to normal after about 4 weeks of monitored abstinence (Hirvonen 2012).

Not everyone follows the same curve. Bonnet and Preuss describe one pattern where symptoms build to a peak in the first week, and another where they are worst at the start and ease steadily from there.

Why sleep takes the longest

In a lab study of 20 daily users, three days without weed cut total sleep time, made it take longer to fall asleep, and raised ratings of strange or vivid dreams. Sleep continuity got worse across all three days (Vandrey and colleagues, 2011).

A second study recorded sleep in 18 heavy users on nights 1, 2, 7, 8 and 13 of abstinence. Total sleep, sleep efficiency and REM sleep went down, and time awake after first falling asleep went up (Bolla and colleagues, 2010). The authors suggested that treating sleep problems could be one way to help people with cannabis use disorder.

Bonnet and Preuss note that sleep difficulty is thought to be the withdrawal symptom most linked to going back to use.

Is weed withdrawal dangerous?

Bonnet and Preuss describe the symptoms as mostly changes in mood and behavior, usually light to moderate in intensity. Treatment for withdrawal usually happens on an outpatient basis. A hospital or residential stay is mainly for people with severe dependence, other health conditions, or trouble functioning day to day.

There are no FDA-approved medicines for cannabis withdrawal or cannabis use disorder. Behavioral treatments, including cognitive behavioral therapy, motivational enhancement therapy and contingency management, can help (NIDA).

Tracking how your head clears

Fogless is a free quit tracker that runs in your browser. Next to the day counter, it has a one-minute brain check: a reaction time test (five taps, and it keeps the median), a number memory test that adds a digit each time you get one right, and a focus test where you tap the direction of the middle arrow. Your first check is your baseline of 100, and later checks are compared to it.

Scores also go up with practice (Bartels and colleagues, 2010) and drop with lost sleep (Lim and Dinges, 2010), so the trend over several weeks says more than any single day. Fogless does not diagnose anything and does not shorten withdrawal. There is no account, and your data stays on your device. The free version shows your last five checks; Pro ($4.99 a month or $29 a year) adds a trend line for each test, your average for each week since you quit, and the full history.

When to get help

FAQ

How long does weed withdrawal last?

For most heavy users in studies, 1 to 2 weeks, and usually no more than about 3 weeks. Sleep problems can take longer to settle.

What day of weed withdrawal is the worst?

Days 2 to 6 for most people in Budney's 2003 study. Some people feel worst in the first day or two and improve steadily from there.

Why can't I sleep after quitting weed?

Sleep changes are some of the most consistent findings in abstinence studies: less total sleep, more time to fall asleep and vivid dreams. In one study they were still present on night 13.

Does everyone who quits weed get withdrawal?

No. About 47% of regular or dependent users had it in a 2020 meta-analysis. In a national survey of frequent users, 12.1% met the criteria.

Is there medicine for weed withdrawal?

No medicine is FDA-approved for it (NIDA). If your symptoms are severe, a doctor can go over options with you.

If you want to watch your own numbers as the days add up, take your first brain check in Fogless. It takes about a minute and needs no account.

Sources

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