Can you drink alcohol on antibiotics?
Last updated September 3, 2026.
For most common antibiotics, moderate drinking is fine - but metronidazole and tinidazole are hard exceptions: zero alcohol, plus 48 hours after metronidazole and 72 hours after tinidazole. Those two cause a disulfiram-like reaction with alcohol: flushing, vomiting, stomach pain, and a racing heart. With amoxicillin, azithromycin, doxycycline, and cephalexin, alcohol does not block the drug. Two softer warnings: linezolid reacts with tap beer and red wine, and heavy drinking while infected worsens dehydration and sleep and amplifies antibiotic side effects like nausea and dizziness. Pymander is a free AI doctor, 24/7 by text, and can check your exact antibiotic.
What to do
- Check the drug name first: metronidazole and tinidazole mean total avoidance, including the 48 to 72 hour tail.
- Read the leaflet that comes with the medicine: interactions are spelled out there for your specific drug.
- Keep it moderate even when allowed: alcohol amplifies nausea, dizziness, and dehydration while you are sick.
- Ask a pharmacist when unsure: a 30-second check beats a miserable reaction.
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