IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-9-7-30874 Original Research Paper A COMPARATIVE STUDY ON THE EFFICACY AND SAFETY OF DROTAVERINE HYDROCHLORIDE AND VALETHAMATE BROMIDE ON CERVICAL DILATATION DURING LABOUR. Surbhi Suman Dr. July 2020 9 7 01 02