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Is doxycycline hydrochloride 100mg a sulfa based drug?

Medically reviewed by Drugs.com Last updated on Apr 16, 2019.

Official Answer

by Drugs.com

No, doxycycline is not a sulfa based drug. It is a tetracycline antibiotic that fights bacteria in the body.

Doxycycline is used to treat many different bacterial infections, such as urinary tract infections, acne, gonorrhea, and chlamydia, periodontitis (gum disease), and others.

Doxycycline is also used to treat blemishes, bumps, and acne-like lesions caused by rosacea. Doxycycline will not treat facial redness caused by rosacea.

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