A nightcap can feel relaxing, yet feeling drowsy is not the same as getting restorative sleep. Alcohol can also interact with medications and worsen breathing problems during sleep.
How alcohol changes sleep
The National Heart, Lung, and Blood Institute notes that alcohol may make it easier to fall asleep but can produce lighter sleep and more waking later in the night. A systematic review and meta-analysis found that alcohol can reduce REM sleep, including at low doses in the studies reviewed. Results depend on dose and study conditions; the effect on any one person is not predictable from a single drink.
Alcohol may also increase nighttime bathroom trips or worsen reflux for some people. Do not assume that a particular bedtime drink or specific waiting interval guarantees undisturbed sleep.
Alcohol, snoring and sleep apnea
Alcohol can affect upper-airway muscle tone and worsen snoring or sleep-disordered breathing in some people. If you have sleep apnea, discuss alcohol and sedating medications with your clinician, and continue prescribed treatment. Loud snoring, gasping, witnessed pauses or excessive daytime sleepiness are reasons to ask about evaluation.
Ways to support sleep
- Consider an alcohol-free evening routine, such as reading or a warm noncaffeinated drink.
- Keep a consistent wake time and make room for enough sleep.
- Notice your own patterns and discuss persistent trouble sleeping with a clinician.
For chronic insomnia, cognitive behavioral therapy for insomnia (CBT-I) is usually recommended as a first treatment. Avoid mixing alcohol with sleep medicines or other sedatives unless your clinician specifically advises you.
A note about alcohol withdrawal
If you have been drinking heavily for a prolonged period, stopping suddenly can cause dangerous withdrawal. The National Institute on Alcohol Abuse and Alcoholism recommends seeking medical help to plan a safe change. Sleep problems during recovery are worth discussing with a healthcare professional.
Frequently asked questions
Does alcohol help you sleep?
It can cause initial drowsiness, but it can disrupt sleep later and should not be used as an insomnia treatment.
Does alcohol affect REM sleep?
Research shows REM sleep can decrease after alcohol, although responses and study conditions differ.
Can I use alcohol with a sleeping pill?
Combining alcohol with sedatives can be dangerous. Ask your clinician or pharmacist about your specific medications.