How Long After Drinking Alcohol to Take Medicine: What Labels Say

How long should you wait to take medicine after drinking alcohol?

How long to wait between medication and alcohol depends on the drug, and only a few labels give a number. For metronidazole (Flagyl), the FDA label says no alcohol during treatment and for at least 3 days after your last dose, though CDC STI treatment guidelines disagree. After a lorazepam (Ativan) injection, the label says at least 24 to 48 hours. Opioid Medication Guides say not to drink while you take them, and benzodiazepine guides say not to without asking your prescriber first. Tylenol and Advil labels give no wait time; they warn about 3 or more drinks every day. Check the table below for your drug class, and confirm with your pharmacist.

Medical Disclaimer: This article is for informational purposes only and does not replace professional medical advice. Consult your doctor or pharmacist for advice specific to your medications.

Why timing between medication and alcohol matters

In national survey data from 1999 to 2010, 41.5% of U.S. adults who drink also took at least one prescription medication that interacts with alcohol. Among drinkers 65 and older, it was 77.8%.

The study could not tell whether people drank and took these medicines at the same time.

The NIAAA's chart lists more than 100 medicines that can cause harm when taken with alcohol. It warns that alcohol and medicines can interact even if not taken at the same time, but gives no wait times. Most labels don't either.

How long to wait between medication and alcohol (reference table)

Important: Only a few labels give a time window. "No set wait time" means the label gives no hour count, not that drinking is safe.

Table sources: FDA labels on DailyMed for oxycodone, hydrocodone, extended-release morphine, Xanax, Valium, Ativan tablets, Ativan injection, cyclobenzaprine, methocarbamol, Amrix, Tylenol, Advil, Aleve, Zoloft, Lexapro, duloxetine (Cymbalta), Nardil, Parnate and metformin; MedlinePlus for warfarin; and the NIAAA chart.

Antibiotics and alcohol: the 72-hour rule

Metronidazole (Flagyl) gets the most attention here. The FDA label for metronidazole says to stop drinking alcohol during treatment and for at least 3 days (72 hours) after your last dose. The same goes for products with propylene glycol. It says stomach cramps, nausea, vomiting, headaches, and flushing may occur.

Other sources give a different answer. The NHS says to avoid alcohol for 2 days after you finish metronidazole. The CDC questions the warning itself. Its 2021 STI Treatment Guidelines cover alcohol in the section on bacterial vaginosis. There, the CDC cites a review that found no convincing evidence of a disulfiram-like interaction between alcohol and metronidazole. It concludes that "refraining from alcohol use while taking metronidazole (or tinidazole) is unnecessary."

So which advice do you follow? The label is the drug's official set of directions, so ask the doctor who prescribed it, or your pharmacist, which advice applies to you. If you already drank, do not stop or skip the antibiotic because of it. Our guide to metronidazole and alcohol puts the label and the CDC side by side.

Tinidazole (Tindamax) has a similar rule. Its FDA label on DailyMed says to avoid alcohol, and products with ethanol or propylene glycol, during treatment and for 3 days afterward. For the most common antibiotics, the NHS says drinking in moderation is unlikely to cause problems. Some antibiotics do have side effects, like feeling sick or dizzy, that alcohol might make worse. Talk to your pharmacist about your specific antibiotic. If yours is doxycycline, our guide to doxycycline and alcohol covers drinking and when to take your dose.

Related: what to do if you missed an antibiotic dose.

Painkillers and alcohol: a dangerous combination

Opioids

Opioids and alcohol together can kill you. The CDC says the combination "can be deadly": it can make it hard to breathe, damage your brain, and lead to early death. According to a JAMA Network Open study, alcohol was co-involved in roughly 15% of all opioid overdose deaths between 2015 and 2017, and the death rate from opioid overdoses involving alcohol rose 5.5-fold from 1999 to 2017.

If remembering doses is the hard part, a medication reminder app that won't stop until you take your dose can take that job off your plate.

FDA Medication Guides for oxycodone, hydrocodone and long-acting extended-release morphine say not to drink alcohol while taking them. They warn it may cause you to overdose and die. They give no wait time after your last dose, so ask your doctor.

How long after taking ibuprofen can I drink alcohol?

With NSAIDs, the alcohol warning is about stomach bleeding. In a 1999 study of major upper GI bleeding, regular ibuprofen use among drinkers was linked to 2.7 times the risk. Occasional use was not linked to a higher risk in that study. The Advil Drug Facts label gives no wait time. It says the chance of stomach bleeding is higher if you have 3 or more alcoholic drinks every day while using it.

The NHS says you can drink normally while taking ibuprofen, but to try to avoid drinking a lot of alcohol.

Deeper dive: Advil and alcohol: ibuprofen after drinking covers the 2.7x GI bleeding data, dose-response math (200 mg vs 600 mg), and why heavy drinkers should avoid routine NSAID use.

Combination products are the harder case, because one box can carry two of these drugs at once. How long after taking Excedrin you can drink alcohol works through that example: acetaminophen, aspirin, and caffeine clear on three separate schedules, so there is no single wait time to look up.

Naproxen is the other common case. Its half-life is several times longer than ibuprofen's, and the Aleve box spaces doses 8 to 12 hours apart. How long to wait between Aleve and alcohol covers what the label does and does not say.

Acetaminophen (Tylenol) and alcohol

Both acetaminophen and alcohol are processed by your liver. Together, they can cause serious liver damage. The FDA warns that severe liver damage may occur if you have three or more alcoholic drinks per day while using acetaminophen. MedlinePlus says not to take it if you drink that much every day. The NHS says you can drink normally while taking paracetamol (the UK name for acetaminophen), but that it may not be suitable if you are dependent on alcohol or binge drink. Talk to your doctor about safe use if you drink regularly.

Deeper dive: Tylenol and alcohol: the daily-drinker exception covers the CYP2E1 mechanism, daily-dose limits for regular drinkers, and signs of liver injury to watch for.

Drinking on antidepressants: there's no simple wait time

As with painkillers, there's no clean "wait X hours" rule for most antidepressants.

SSRIs and SNRIs (like sertraline, escitalopram, and duloxetine) stay in your system continuously when you take them daily. The Mayo Clinic says it's best not to combine antidepressants and alcohol. FDA Medication Guides say not to drink alcohol while taking Zoloft or Lexapro, and to avoid heavy drinking on duloxetine (Cymbalta). Duloxetine's label also says it should not be prescribed to people with substantial alcohol use. Alcohol can increase sedation, worsen depression, and reduce the effectiveness of your medication.

MAOIs (like phenelzine) are a different story. Some alcoholic beverages contain tyramine, which can trigger a dangerous spike in blood pressure called a hypertensive crisis. If you take an MAOI, avoid alcohol completely. The FDA label for Nardil on DailyMed says not to use it with alcohol, and to avoid beer and wine, even alcohol-free versions, while taking it and for two weeks after stopping. Parnate's Medication Guide gives the same 2 weeks for drinks high in tyramine.

If you're on an antidepressant and want to have an occasional drink, talk to your doctor first.

Related: Drug-specific guides: Zoloft and alcohol, Lexapro and alcohol, Prozac and alcohol, Wellbutrin and alcohol. Or check the best time to take sertraline or best time to take Lexapro.

Blood pressure meds and alcohol: watch for dizziness

Blood pressure medications like lisinopril and amlodipine don't have a specific hour-based wait time. But the NIAAA's chart lists both among blood pressure medicines that can react with alcohol, with dizziness and fainting among the possible effects.

The lisinopril label says to report lightheadedness, especially early in treatment, and if you faint, to stop taking it until you've talked with your prescriber. But never skip your blood pressure medication just to have a drink.

Deeper dive: Losartan and alcohol: the BP paradox most patients miss explains why a glass of wine stacks with losartan (dizziness, fall risk) but heavy drinking fights against it (rising BP).

Understanding half-life: why wait times differ

You might wonder why ibuprofen is gone in hours but some drugs linger for days. The answer comes down to half-life: how long it takes your body to eliminate half of a drug.

The short version:

• Short half-life (ibuprofen: about 2 hours) = leaves your body faster
• Long half-life (diazepam/Valium: up to 48 hours; its active metabolite, up to 100) = stays in your system longer

That is where the "5 half-lives" rule comes from: 94% to 97% of a drug is eliminated after 4 to 5 half-lives. So a drug with a 2-hour half-life is mostly gone in 8 to 10 hours. One with a 20-hour half-life takes about 3 to 4 days. That is how long a drug stays in you, not when it is safe to drink.

Your liver and kidney health also affect how fast you clear medications. With liver or kidney problems, your body can take longer to clear a drug. Ask your pharmacist whether drinking is safe for you at all.

How to plan ahead when taking medication and drinking

A bit of planning helps:

1. Look up your specific drug in the table above, or ask your pharmacist before the event.
2. Talk to your doctor about dose timing. Some medications allow slight flexibility. If yours does, your doctor may be able to help you plan for a special occasion. Learn more about how to switch medication times safely. Never adjust timing on your own.
3. Set a reminder for the next morning. After a night out, it's easy to forget whether you took your medication. A pill reminder app keeps you honest.
4. Never skip a dose to drink. When in doubt, skip the drink, not the pill.

How Pillo fits in

Knowing when you last took your medication makes the "how long should I wait?" question a lot easier to answer. A reminder app helps with that.

Pillo uses persistent alarms that keep going until you respond, so you're less likely to sleep through a dose or forget one after a late night. It also logs your adherence history, which is useful when you can't remember whether you already took today's pill.

If you're managing multiple medications with different timing, Pillo keeps all of them in one schedule.

FAQ

Can I have just one drink on medication?

It depends on the medication. The label for Nardil (phenelzine), an MAOI, says not to combine it with alcohol. The CDC warns against drinking at the same time as, or within a few hours of, opioids or benzodiazepines. For metronidazole, the FDA label says no alcohol during treatment and for at least 3 days after, while the CDC's STI guidelines call avoiding alcohol while taking it unnecessary. For other drugs, check the table above and ask your pharmacist whether one drink is OK for you.

What should I do if I accidentally drank alcohol with my medication?

Don't panic, but pay attention to how you feel. Benzodiazepine Medication Guides say to get emergency help right away for shallow or slowed breathing or excessive sleepiness. Opioid guides say to call 911 right away for trouble breathing, extreme drowsiness, or a fast heartbeat. On metformin, the label says to stop taking it and call your doctor right away if you feel unusually sleepy or dizzy or have stomach problems with nausea and vomiting. For milder symptoms like a headache or flushing, contact your doctor or call Poison Control (1-800-222-1222). Call 911 right away if someone has trouble breathing, collapses, has a seizure, or can't be woken.

Is it safe to skip my medication so I can drink alcohol?

No. Skipping doses can cause withdrawal symptoms, rebound effects, or let your condition worsen. Our guides explain the risks of missing blood pressure medication, metformin, or warfarin. Always take your medication as prescribed.

How long does alcohol stay in your system?

The NIAAA says your liver can break down only a certain amount of alcohol per hour, no matter how much you drank, and the rate varies from person to person. So the more you drank, the longer alcohol stays in your system. Check the table above before your next dose.

Which medications are most dangerous to mix with alcohol?

The CDC warns that drinking alcohol at the same time as, or within a few hours of, opioids or benzodiazepines can make it hard to breathe and can lead to early death. MAOIs and muscle relaxants also carry high risk. If you take any of these, talk to your doctor about alcohol use.

Medical Disclaimer: This article is for informational purposes only and does not replace professional medical advice. The label rules listed are general and may not apply to your specific situation. Always consult your doctor or pharmacist before combining alcohol with any medication. If you experience a medical emergency, call 911 immediately.

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