Doxycycline works by preventing the growth of the bacteria.
Doxycycline periodontal system is placed in deep gum pockets next to your teeth in order to reduce the depth of the pockets. In deciding to use a medicine, the risks of using the medicine must be weighed against the good it will do. This is a decision you and your dentist or doctor will make. Tell your dentist if you have ever had any unusual or allergic reaction to doxycycline or to other tetracyclines. Also tell your health care professional if you are allergic to any other substances, such as foods, preservatives, or dyes.