Doxycycline is an antibiotic medication that is commonly used to treat a variety of infections caused by bacteria. This medication is a member of the tetracycline family of antibiotics and is known by several synonyms. Some of the common synonyms for doxycycline include Doxy, Atridox, Monodox, Vibramycin, and Oracea. These medications are prescribed by healthcare professionals to treat conditions such as acne, rosacea, gum disease, urinary tract infections, Lyme disease, and more. Regardless of which name is used to refer to this medication, doxycycline is a powerful antibiotic that helps fight infections and reduce the symptoms associated with bacterial infections.