What is used to treat syphilis?

Syphilis is a sexually transmitted infection (STI) caused by the bacterium Treponema pallidum. It can be treated with antibiotics, specifically penicillin. Penicillin is the first-line treatment for all stages of syphilis, and it is usually given as an injection. In some cases, other antibiotics may be used if the person is allergic to penicillin. Early detection and treatment of syphilis is important to prevent serious complications and long-term health problems.