Is doxycycline hydrochloride 100mg a sulfa based drug?
Medically reviewed by Drugs.com. Last updated on April 7, 2025.
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.
https://www.drugs.com/pro/doxycycline.html
https://www.drugs.com/doxycycline.html
Read next
Is Doxycycline safe for dogs? Uses, dosage, side effects
Doxycycline is usually well tolerated and is considered safe for dogs. It is widely prescribed for a range of different conditions such as bacterial infections and oral gum disease. Continue reading
Doxycycline for STDs: Effectiveness, Dosage and Side Effects
Doxycycline is an antibiotic that can be taken within 72 hours of unprotected sex to help prevent common bacterial STDs (sexually transmitted diseases). When doxycycline is used in this way it is called Doxy PEP (postexposure prophylaxis). Doxy PEP significantly protects against 3 STDs, syphilis, chlamydia, and gonorrhea, in high-risk, sexually active adults. STDs may also be called sexually transmitted infections or STIs.
Continue reading
Should doxycycline be taken with food?
Doxycycline, a tetracycline antibiotic, is used to treat many different bacterial infections and skin conditions such as acne and rosacea. Different doxycycline products may have different instructions for how to take the medication. In general, most brands of doxycycline may be taken with food.
Continue readingSee also:
Related medical questions
- Does doxycycline work for acne?
- What are the most common skin conditions? (with photos)
- What are the best antibiotics for pneumonia?
- What is the best antibiotic to treat a sinus infection?
- Does Doxycycline make you tired?
- Can I take doxycycline for a strep throat?
- How long after stopping doxycycline can I drink alcohol?
- What causes black hairy tongue?
- What is doxycycline hyclate used for?
- How long does doxycycline stay in your body?
- Can I take doxycycline if I am allergic to penicillin?
- Can you smoke cigarettes or marijuana on doxycycline hyclate?
- Will it be harmful to take doxycycline with iron supplements?
- Does doxycycline cause kidney pain?
Drug information
- Doxycycline Information for Consumers
- Doxycycline prescribing info & package insert (for Health Professionals)
- Side Effects of Doxycycline (detailed)
- Doxycycline user reviews (1,642)
Related support groups
- Doxycycline (134 questions, 255 members)