Can you drink alcohol while taking antibiotics?

Health advice ·Published 10 October 2026 ·Reviewed 10 October 2026

Written by the Priceline Pharmacy Pacific Fair team. Reviewed by Jason Markey, BPharmSci, MPharm, Owner and Pharmacist.

General health information from a registered pharmacist. It doesn’t replace advice from your own pharmacist or doctor.

It depends on the antibiotic. A small number of antibiotics cause an unpleasant reaction with alcohol, and when we dispense one of these, we add a warning label to the box. For other antibiotics, healthdirect’s advice is still to check with your doctor or pharmacist before you drink, because some others can be affected by alcohol too, and alcohol can make some medicines work less well.

Even when there’s no reaction, alcohol won’t help you get better. With work Christmas parties, long lunches and end-of-year catch-ups around Broadbeach in full swing, here’s how to plan around a course of antibiotics without putting your recovery at risk.

Which antibiotics react badly with alcohol?

Only a few antibiotics are known for a strong reaction with alcohol. We’re not listing them here, because what matters is the medicine in your hand: if it’s one of them, your pharmacist will tell you when it’s dispensed and the box will carry an alcohol warning.

healthdirect describes the reaction these antibiotics can cause as including:

• drowsiness and dizziness
• tummy pain and nausea
• sweating and hot flushes
• headache
• palpitations (a racing or pounding heartbeat)

The effect doesn’t always end with your last tablet. healthdirect notes you may need to wait 2 to 3 days after finishing a course of antibiotics before you drink again, so ask your pharmacist how long applies to yours. It also points out that your body takes many hours to clear the alcohol you drink, and a reaction can happen at any time while alcohol is still in your system.

What about other antibiotics?

For other antibiotics there isn’t one simple rule. healthdirect says some other antibiotics can be affected by alcohol too, and its advice for anyone taking antibiotics who plans to drink is to check first whether it’s safe.

More generally, healthdirect explains that alcohol can affect medicines by:

• making side effects worse
• causing a severe toxic reaction
• making the medicine less effective

Some medicines can be taken safely with an occasional drink but cause problems with regular drinking or a large amount of alcohol. So if your pharmacist tells you an occasional drink is fine with your antibiotic, keep it light. The big Christmas party is where problems are more likely.

Why can alcohol slow your recovery?

Antibiotics work by killing bacteria or stopping them from multiplying, which helps your immune system fight the infection. Drinking can work against that in a few ways:

• Your immune system: healthdirect lists avoiding drinking too much alcohol among the ways to support your immune system.
• Your sleep: alcohol is one of the substances healthdirect says can cause insomnia, and its sleep advice is to reduce or cut out alcohol.
• Your stomach: diarrhoea, nausea and vomiting are common antibiotic side effects. If you have diarrhoea, healthdirect advises avoiding alcohol, as it can make it last longer or feel worse.

If antibiotics tend to upset your stomach, our guide to probiotics with antibiotics explains what the evidence says.

What do the warning labels on your medicine mean?

When we dispense a prescription, the printed pharmacy label shows your name, the medicine and how to take it. Australian pharmacists may also add small extra warning labels, called cautionary advisory labels. Each one carries a short, standard warning, for example about avoiding alcohol, feeling drowsy, or taking the medicine with food.

These labels are easy to miss on a crowded box, so read every one, not just the label with your dose. healthdirect’s advice is simple: always read your medicine label, and if it carries a warning about alcohol, don’t drink. That applies to over-the-counter and herbal medicines too, not just prescriptions.

Which other medicines don’t mix with alcohol?

Antibiotics get the attention, but healthdirect lists other medicines where alcohol can be risky:

• Sleeping tablets and some anxiety medicines: alcohol adds to their sedating effect, causing drowsiness, poor coordination, and slowed breathing and heart rate, with a risk of overdose.
• Opioid pain relievers: healthdirect says never to combine these with alcohol.
• Many antidepressants and antipsychotics: these can cause drowsiness, dizziness and other effects with alcohol.
• Some antihistamines, particularly those that make you drowsy.
• Diabetes medicines: alcohol can cause low blood sugar and hide its warning signs, so never drink without food.
• Blood thinners and blood pressure medicines: usually fine with an occasional drink, but regular or heavy drinking can cause problems.
• Anti-inflammatories such as ibuprofen and aspirin: alcohol adds to the risk of stomach pain, bleeding and ulcers.

healthdirect notes that women and older people are at higher risk of interactions, and that as you get older your body takes longer to process alcohol. Supplements can interact with medicines as well: see our guide to supplements that can interact with your medicines.

How do you plan around antibiotics in party season?

• Take every dose on time. Don’t skip or delay a dose so you can have a drink.
• Finish the course as directed. healthdirect advises taking antibiotics for as long as you’re told to, even if you’re feeling better, and not taking more than you’ve been told to.
• Return any leftover tablets to the pharmacy rather than saving them. Here’s how to dispose of old medicines.
• If you’ve been told a drink is OK, pace yourself. The Australian guidelines healthdirect quotes for healthy adults are no more than 10 standard drinks a week and no more than 4 on any one day. Eat before and while you drink, and alternate alcoholic and non-alcoholic drinks.

Remember too that antibiotics don’t work against viruses, which cause most colds, flu and COVID-19. If you pick up a sniffle before a party, antibiotics won’t help it.

At Pacific Fair, we’ll tell you whether alcohol is a problem with your antibiotic when we dispense it. You can send your script ahead and collect it when it suits you, including late on Thursdays.

When to see a pharmacist or GP

Talk to a pharmacist or see a GP, such as our in-store Help Medical GPs, if:

• you’re not sure whether your antibiotic mixes with alcohol
• you’ve had a drink while taking an antibiotic with an alcohol warning and you feel unwell
• you develop a rash or other signs of an allergic reaction
• you have diarrhoea that is severe, bloody or keeps going
• your infection isn’t improving, or you feel worse, while taking the antibiotic

Call 000 in an emergency. If someone has trouble breathing, swelling of the face or throat, or has been drinking and is hard to wake or breathing slowly, call triple zero (000) straight away.

This article is general information only and isn’t a substitute for personal advice from your doctor or pharmacist. Always read the label and follow the directions for use. If symptoms persist or you’re worried, talk to your pharmacist or GP. In an emergency, call 000.