Doxycycline (Vibramycin) is an antibiotic in the Tetracycline family. Doxycycline is one of the most frequently used oral antibiotics for acne treatment. It is also used to treat certain types of skin, respiratory and sexually-transmitted infections that are caused by bacteria.
Doxycycline can be an effective treatment for many people with moderate to severe acne. A substantial amount of clinical research and positive patient reports support the use of Doxycycline for the treatment of acne.
However, acne-causing P. acnes bacteria that are resistant to Doxycycline (and other Tetracycline antibiotics) are becoming increasingly common. Because of this antibiotic resistance, Doxycycline is ineffective for many patients.