Minocycline is a tetracycline antibiotic that fights bacteria in the body. Minocycline is used to treat many different bacterial infections, such as urinary tract infections, respiratory infections, skin infections, severe acne, gonorrhea, tick fever, chlamydia, and others. Minocycline may also be used for purposes not listed in this medication guide.
Dynacin is a drug that treats infections that have been caused by certain bacteria. It might also be given alongside other medicines to treat severe acne. Dynacin works by slowing the growth of certain bacteria and allowing the immune system of the body to destroy them.