If you have bacterial infections, acne, rosacea, or certain other conditions, your healthcare provider may prescribe doxycycline. This prescription antibiotic comes in several strengths and forms. The tablets are available in the following strengths:
- Doxycycline 20 mg (Alodox™, Periostat™)
- Doxycycline 50 mg, 75 mg, 100 mg, and 150 mg (Doryx®, Monodox®, NutriDox™, Vibramycin®, Vibra-Tabs®).
There are also other forms of doxycycline products, including capsules, a syrup, an oral suspension, a gel, or injections.
Doxycycline is part of a class of drugs called tetracyclines. It decreases bacteria's ability to make protein, which bacteria need to live. This activity does not directly kill the bacteria, but it does inhibit their growth and multiplication, which gives the immune system a chance to fight the infection.
Even though most people tolerate the tablets well, doxycycline is not suitable for everyone. For example, you may not be able to take doxycycline if you have certain medical conditions, such as liver disease or frequent yeast infections. Before using this medication, make sure to talk to your healthcare provider about any other medical conditions you have and any other medications you are taking (including vitamins, supplements, and non-prescription medications).
(Click Doxycycline for a more in-depth look at how this product works to treat a wide variety of conditions. This article also discusses potential side effects, general dosing guidelines, and important information to be aware of before using this medication.)