Penicillin G, administered parenterally, is the preferred drug for treating all stages of syphilis. If the patient is allergic, then Tetracycline or doxycycline may also be used. During pregnancy, parenteral penicillin G is the only therapy with documented efficacy for syphilis.  The Jarisch-Herxheimer reaction is an acute adverse febrile reaction that may occur after initiation of therapy for syphilis.
Syphilis medical therapy
Neurosyphilis medical therapy
HIV AIDS medical therapy
Typhus medical therapy
Hepatitis C medical therapy
Kyphosis medical therapy
Babesiosis medical therapy
Cytomegalovirus medical therapy