Doxycycline is a tetracycline antibiotic with potent antibacterial activity against a wide variety of bacteria. According to drugs.com, doxycycline is used to treat many different bacterial infections, such as acne, urinary tract infections, intestinal infections, respiratory infections, eye infections, gonorrhea, chlamydia, syphilis, periodontitis (gum disease), and others. Doxycycline exerts its effect by stopping the growth […]