What is doxycycline?

Doxycycline is a tetracycline antibiotic. It fights bacteria in the body.

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

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

Some forms of doxycycline are used to prevent malaria, to treat anthrax, or to treat infections caused by mites, ticks, or lice.

Important information

You should not take doxycycline if you are allergic to any tetracycline antibiotic.
Slideshow: Drug Prices Gone Wild: 10 Old Drugs, 10 New Pricetags
Drug Prices Gone Wild: 10 Old Drugs, 10 New Pricetags

Children should not use this medicine. Doxycycline can cause permanent yellowing or graying of the teeth in children younger than 8 years old.
Before taking this medicine

You should not take this medicine if you are allergic to doxycycline or other tetracycline antibiotics such as demeclocycline, minocycline, tetracycline, or tigecycline.

To make sure doxycycline is safe for you, tell your doctor if you have:

liver disease;

kidney disease;

asthma or sulfite allergy;

a history of increased pressure inside your skull;

if you also take isotretinoin (Amnesteem, Claravis, Sotret); or

if you take seizure medicine (carbamazepine, phenobarbital, phenytoin), or a blood thinner (warfarin, Coumadin, Jantoven).

If you are using doxycycline to treat gonorrhea, your doctor may test you to make sure you do not also have syphilis, another sexually transmitted disease.

Do not use doxycycline if you are pregnant. It could harm the unborn baby or cause permanent tooth discoloration later in life. Tell your doctor right away if you become pregnant during treatment.


Read about Doxycycline Side Effects