Doxycycline — Drug Interactions, Alcohol & Pregnancy Guide

Last reviewed: · Source: US FDA drug label database

About Doxycycline

Doxycycline is a versatile tetracycline antibiotic. It should be taken with plenty of water and remain upright for 30 minutes to avoid oesophageal irritation. Avoid dairy and antacids within 2 hours. Causes photosensitivity — use sunscreen.

Also sold as: Vibramycin, Doxylar, Periostat

Drug class Tetracycline antibiotic
Used for Chest infections, Acne, Malaria prophylaxis, Rosacea, STIs, Lyme disease
Max adult dose 100mg twice daily (standard); 200mg loading dose on first day
OTC in UK Prescription only

Doxycycline and Alcohol

🟡 USE WITH CAUTION

Avoid regular alcohol with doxycycline — it can reduce the antibiotic's effectiveness and worsen nausea, a common side effect.

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Doxycycline in Pregnancy

🔴 AVOID

Avoid doxycycline in pregnancy — tetracyclines deposit in developing teeth and bones; safer antibiotics exist for almost every infection.

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Doxycycline — Drug Combinations

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Not sure if Doxycycline is safe with your other medications?

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