Blog · Published 25 September 2026 · By Cristian Cojocaru

Can't sleep after quitting alcohol? Why it happens and how long it lasts

Insomnia is one of the most common things people notice after they stop drinking. Why it happens, how long it usually lasts, and what actually helps.

Quick answer

Poor sleep is one of the most common effects of stopping drinking. It is usually worst in the first few days and starts to improve as your brain recovers. In one study of people in early recovery, insomnia lasted about five weeks. After years of heavy drinking it can last months, but it does get better, and drinking to get to sleep keeps it going.

Why stopping drinking can wreck your sleep

Alcohol is a sedative. It acts on GABA, the brain system that calms the nervous system down, which is why a drink can make you drowsy. When someone drinks regularly, the brain adjusts to having alcohol around: it turns its own calming signals down and its alerting signals up.

Take the alcohol away and that adjustment is still there. In a 2019 review of alcohol and sleep, the researchers George Koob and Ian Colrain describe exactly this: the loss of alcohol's effect on GABA receptors, the brain's arousal systems running high during withdrawal, and less deep, slow-wave sleep once people stop drinking. The result is a brain that is too switched on to sleep well. It takes longer to fall asleep, you wake more often, and sleep feels lighter.

How long does insomnia last after quitting alcohol?

It depends mostly on how much and for how long you were drinking. Much of the research below looked at people being treated for alcohol dependence, so it describes heavier drinking than many people who are simply cutting alcohol out.

The first few days. Withdrawal symptoms usually start 6 to 24 hours after the last drink and often peak in the first 24 to 72 hours before easing, according to the UK charity Drinkaware. Poor sleep is part of that for many people. Some people have symptoms for a week or longer, especially after heavy or long-term drinking.

The first weeks. In one study of 56 people in early recovery, insomnia lasted about five weeks.

Months. For some people it lasts longer. A 2011 study followed people treated for alcohol dependence for six months. At the start, 47% had insomnia. Staying off alcohol, or drinking only moderately, went with better sleep. But among those who had insomnia at the start, it was still there in over 60% of cases, and it persisted in a quarter of patients even though they had not gone back to drinking.

Beyond a year. In people who stayed abstinent, most measures of sleep improved during the first year, although lighter, more broken sleep could still be there after two years.

So the honest answer: it usually starts to improve within days to weeks, it keeps improving the longer you stay off alcohol, and after long, heavy drinking it can take months.

Why it matters: sleep and starting again

Bad nights are more than unpleasant. Research links poor sleep in early recovery with going back to drinking. In one study, 60% of people who had insomnia before they stopped had started drinking again within five months, and insomnia was the only significant predictor of that once the severity of their drinking and depression was taken into account.

That is why "a drink to help me sleep" is such an easy trap. Alcohol can make you drowsy, so it feels like a fix. But in the 2011 study, sleep improved for people who stayed off alcohol or drank moderately, and not for those who went back to heavy drinking. Drinkaware's advice is plain: resist the urge to start drinking again to help you get off to sleep.

What actually helps

The basics, every day. The NHS recommends:

going to bed only when you feel sleepy
getting up at the same time every day, even after a bad night
relaxing for at least an hour before bed, for example with a bath or a book
keeping your bedroom dark and quiet
exercising regularly during the day, but not in the 4 hours before bed
no caffeine or nicotine in the 6 hours before bed
no phone or TV right before bed
no naps during the day

On their own, these habits rarely fix stubborn insomnia. They are the foundation the other treatments build on.

CBT for insomnia. Cognitive behavioural therapy for insomnia (CBT-I) is a short, structured talking therapy that changes the habits and thoughts that keep insomnia going. A 2017 review of insomnia treatments in people with alcohol use disorder found that behavioural treatments like CBT-I improved sleep much more than medication did. It did not change drinking on its own, so it works best alongside support for stopping. In the UK, a GP can offer CBT or refer you to a sleep clinic.

Be careful with sleeping pills. Do not reach for sleeping tablets, and never take someone else's. Addiction specialists generally advise against sedative sleeping pills for people recovering from alcohol problems, because of the risk of dependence, withdrawal effects, rebound insomnia and overdose if they are mixed with alcohol. The exception is medication a doctor gives you to manage withdrawal itself. The NHS notes that GPs now rarely prescribe sleeping pills for insomnia.

When to get help

See a GP if changing your sleep habits has not helped, if you have had trouble sleeping for months, or if insomnia is affecting your daily life.

Get medical help straight away if you have repeated vomiting, severe shaking or hallucinations after stopping.

If you drink heavily every day, speak to a GP or a local alcohol service before you stop. Stopping suddenly when you are dependent on alcohol can be dangerous and even life-threatening.

Questions

Is it normal to barely sleep in the first few days?

Yes. Broken sleep is one of the most common early withdrawal symptoms: in one large group of men in treatment, two thirds reported insomnia as a withdrawal symptom. It is usually worst in the first days after stopping. If poor sleep comes with severe shaking, hallucinations or repeated vomiting, get medical help.

Will one drink help me sleep?

It may make you drowsy, but going back to drinking is linked with sleep that stays bad and with relapse. It is the one sleep aid worth avoiding.

Will my sleep ever be better than before?

Very likely. Drinkaware points out that stopping drinking is a great way to improve the quality of your sleep, and that sleep patterns will almost certainly start to improve as the brain recovers from withdrawal.

Sources

Count your sober days

Sober Counter counts your days, shows what your body is healing and helps the moment a craving hits. It never resets you to zero after a slip. Coming soon to iPhone.

Free sober days calculator

Need support right now?

In the UK, the NHS lists free alcohol support services: NHS alcohol support. In the US, the SAMHSA National Helpline is free, confidential and open all day, every day. Elsewhere, your local health service can point you to help near you.

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