Doxycycline
Doxy is a brand-name tetracycline antibiotic used to treat various bacterial infections including respiratory tract infections, urinary tract infections, acne, and certain sexually transmitted infections. It works by inhibiting bacterial protein synthesis, preventing the growth and spread of bacteria. This medication requires a prescription and is typically taken orally.
Doxy is an antibiotic used to treat bacterial infections by stopping bacterial growth.
Key facts at a glance
- RxNorm
- 544837
- Generic
- Doxy
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Treatment of respiratory infections, urinary tract infections, acne, chlamydia, gonorrhea, syphilis, and bacterial conjunctivitis. Also used for malaria prophylaxis and to treat acne vulgaris.
Doxy belongs to the tetracycline antibiotic class and works by binding to the 30S ribosomal subunit of bacteria, inhibiting protein synthesis and preventing bacterial replication.
Should not be used in children under 8 years old due to tooth discoloration. May cause photosensitivity - avoid prolonged sun exposure. Take with food and water to reduce GI irritation. Antacids and dairy products may reduce absorption. Not effective against viral infections like common cold or flu.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy