A glass of wine makes you drowsy, melatonin makes you drowsy, so together they should guarantee a good night, right? Not quite. Alcohol undermines the very sleep melatonin is meant to support, and stacking two things that make you sleepy carries its own risks. Here's what to know.
Written by Vita Globe Editorial Team | Reviewed against a 2025 systematic review, NIH (NCCIH), CDC and Mayo Clinic guidance
Can you take melatonin with alcohol?
It's best not to. Both can make you drowsy[2], so combining them can leave you more impaired than you expect. And alcohol works against better sleep: a 2025 meta-analysis found REM sleep was disrupted even after about two standard drinks, with more disruption in the second half of the night[1]. On nights you drink, skip the melatonin and talk to your doctor if you're unsure.
Caveat: There's little research testing melatonin and alcohol together; the advice is based on what each does on its own.
Sources: Gardiner et al., Sleep Med Rev 2025 · Mayo Clinic · Verified 2026-09-27
In this article
What does alcohol actually do to your sleep?
Alcohol has a reputation as a sleep aid, but the research tells a more complicated story. A 2025 systematic review and meta-analysis of studies in healthy adults found:
- REM sleep takes a hit, even at modest amounts. Disruption to REM sleep showed up after a low dose of alcohol (about two standard drinks) and grew with higher doses[1].
- Falling asleep faster only happened at high doses. Shorter time to fall asleep was seen only after roughly five standard drinks[1].
- The second half of the night suffers most. As alcohol is metabolized, sleep disruption tends to increase later in the night[1].
CDC travel guidance describes the same pattern: alcohol may make you drowsy at first, but it fragments sleep and reduces its quality[4]. In other words, a drink may help you nod off, then cost you the deeper, more restful sleep later on.
Why shouldn't you mix melatonin and alcohol?
- More drowsiness than you bargained for. Melatonin can cause drowsiness, dizziness and headache, and Mayo Clinic advises against driving or using machinery within five hours of taking it[2]. Alcohol adds its own sedation and impaired coordination. Together, that can mean unsteadiness, poor judgment and a higher risk of falls, especially if you get up during the night.
- They pull in different directions. Melatonin is a timing signal meant to support your body's natural sleep rhythm. Alcohol disrupts sleep structure later in the night[1], which undercuts what you were hoping melatonin would do.
- Overlapping side effects. Dizziness, nausea and next-day grogginess are among melatonin's reported side effects[3][5]. Alcohol can cause the same, making a rough morning more likely.
- Medication interactions. The NIH advises medical supervision for melatonin in people with epilepsy or taking blood thinners[3], and alcohol interacts with many medications too. Layering all three is a conversation to have with your doctor or pharmacist.
What doesn't the research tell us?
To be honest about the evidence: we didn't find good-quality studies that directly test melatonin supplements taken together with alcohol in everyday settings. That means we can't give you a precise "safe" amount of alcohol or an exact number of hours to wait before taking melatonin.
What we do know is how each behaves on its own. Melatonin causes drowsiness in some people[2], and alcohol disrupts sleep even at modest doses[1]. That's enough to make "don't combine them" the sensible default.
What should you do on nights you drink?
- Skip the melatonin on nights you've been drinking.
- Stop drinking well before bed and alternate with water.
- Keep your usual wake time and get morning light, rather than sleeping in, to protect your rhythm.
- Don't drive after drinking, and don't drive within five hours of taking melatonin[2].
- If you're regularly using a drink to fall asleep, that's worth raising with a clinician. It's one of the common sleep mistakes that quietly erodes sleep quality.
Traveling? Alcohol on a long flight can make jet lag worse; see melatonin for jet lag for a better plan.
Who should be especially careful?
- Older adults, who may be more prone to falls at night
- Anyone taking sleep medications, anxiety medications, blood thinners or seizure medications
- People with sleep apnea or loud snoring
- Anyone who needs to drive, care for a child or be alert early the next day
- Anyone who is pregnant or breastfeeding (see melatonin and pregnancy)
The honest summary
- Alcohol disrupts REM sleep even at about two drinks, especially later in the night[1].
- Melatonin and alcohol can both cause drowsiness, so combining them raises the risk of feeling impaired[2].
- Direct research on the combination is limited, so the safest choice is to skip melatonin on nights you drink.
Our option
Vita Globe Melatonin 5mg Gummies – 50ct
For alcohol-free nights: 5mg of melatonin per two-gummy serving in a blueberry-flavored vegan gummy, for occasional sleeplessness. Do not drive or operate machinery after use. Tested by an independent third-party lab.*
Frequently asked questions
How long after drinking can I take melatonin?
There's no research-based waiting time. The simplest approach is to skip melatonin on nights you drink, and ask your doctor or pharmacist if you have specific concerns.
Is it dangerous to take melatonin after one glass of wine?
For most healthy adults it's unlikely to be dangerous, but it can add to drowsiness[2], and even modest drinking can disrupt REM sleep[1]. It's still better to skip it.
Can I take melatonin the morning after drinking?
Melatonin in the morning can make you drowsy during the day[2]. It isn't a hangover remedy.
Does alcohol lower your melatonin?
Alcohol clearly disrupts sleep structure[1], but we didn't find strong enough evidence on its effect on your own melatonin levels to make a firm claim.
Sources
- Gardiner C, Weakley J, Burke LM, et al. The effect of alcohol on subsequent sleep in healthy adults: a systematic review and meta-analysis. Sleep Med Rev. 2025;80:102030. doi:10.1016/j.smrv.2024.102030
- Mayo Clinic Staff. Melatonin side effects: What are the risks? Mayo Clinic. Updated December 2025. mayoclinic.org
- National Center for Complementary and Integrative Health (NIH). Melatonin: What You Need To Know. Updated May 2024. nccih.nih.gov
- Riedy SM, Williams SG. Jet lag disorder. In: CDC Yellow Book: Health Information for International Travel, 2026 edition. Centers for Disease Control and Prevention. cdc.gov
- Besag FMC, Vasey MJ, Lao KSJ, Wong ICK. Adverse events associated with melatonin for the treatment of primary or secondary sleep disorders: a systematic review. CNS Drugs. 2019;33(12):1167–1186. doi:10.1007/s40263-019-00680-w
About the Vita Globe Editorial Team
The Vita Globe Editorial Team researches and writes our wellness content, working from peer-reviewed research, systematic reviews and guidance from bodies such as the NIH and the FDA. We cite our sources inline and update articles when the evidence changes.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This article is for informational purposes only and is not a substitute for medical advice. Talk to your healthcare provider before starting any new supplement, particularly if you are pregnant, nursing, taking medication, or caring for a child.
