<prompt> Drug of choice for syphilis during pregnancy isAmpicillinErythromycinBenzathine penicillinTetracyclines  <response>: Ans. c Benzathine penicillin. Ref. KD Tripathi - 4th 741, 751; Williams Obstetrics - 780 Penicillin is DOC during pregnancy as it also protects the newborn from developing syphilis. If patient is allergic to penicillin, desensitize the patient give penicillin not erythromycin.DOC for syphilisPenicillinAlternative to penicillinErythromycinDuring pregnancyDOC even if patient is allergic to penicillin is Penicillin. Because erythromycin never protect baby from developing syphilis 