Labour can be defined as the natural and physiological event of delivery of the child. It has been proved that the dilatation of cervix is one of the important factors determining the duration of labour. The prolonged labour will result in maternal exhaustion. In this crucial situation, certain drugs which will overcome the functional over activity of the circular muscles of cervix. The aim of the present study is to compare the effect of drugs - Drotaverine Hydrochloride and Valethamate Bromide in Shortening the duration of active phase of labour.