This book enlightens the contraceptive value of different hormone combinations like, Medroxyprogesterone Acetate (MPA) and Dihydrotestosterone (DHT) against male reproduction. The book provides anti-fertility potential of these two hormones which is estimated experimentally and explained in an organized way along with the tabular data. Various important fertility regulating biochemical parameters, hematological indices and serum parameters of male reproductive tissue along have been assessed and shown in this handout in a very lucid way. This concise and well elaborated book will be very supportive to readers as well as present day researchers who are working in the field of contraceptive drug design and discovery.