Tetracycline
Tetracycline is an antibiotic for selected infections caused by susceptible bacteria and some cases of acne. It does not treat viral illness.
Key points
- Diagnosis, resistance and local antibiotic guidance determine whether tetracycline is appropriate.
- Pregnancy, tooth and bone development, swallowing instructions and interactions with minerals require review.
- Severe headache with visual change, painful swallowing or a blistering rash needs urgent assessment.
Listings are for comparison only. Suitability and supply depend on clinician and pharmacy checks, stock, destination rules and prescription requirements.
How it works
Tetracycline binds to bacterial ribosomes and blocks protein production, limiting growth of susceptible bacteria.
Important safety checks
Pregnancy, kidney or liver disease, oesophageal problems and other medicines require review. Take with adequate water and follow instructions about remaining upright. Antacids, iron, calcium, magnesium and dairy can reduce absorption. Retinoids can add to intracranial-pressure risk.
When to seek urgent care
Seek urgent help for severe headache with blurred or double vision, severe pain or difficulty swallowing, facial swelling, breathing difficulty, a painful blistering rash, yellow skin or eyes, or severe persistent or bloody diarrhoea.