Advances in Sexual Medicine, 2013, 3, 10-18 http://dx.doi.org/doi:10.4236/asm.2013.33A002 Published Online August 2013 (http://www.scirp.org/journal/asm) Testosterone and Its Analogs as a Male Contraceptive Abdul S. Ansari, Chandra Shekhar Yadav, Nirmal K. Lohiya* Centre for Advanced Studies, Department of Zoology, University of Rajasthan, Jaipur, India Email: *
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[email protected] Received May 14, 2013; revised June 14, 2013; accepted June 22, 2013 Copyright © 2013 Abdul S. Ansari et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. ABSTRACT Male contraception by means of hormonal approach was initiated more than 60 years ago when men became azoo- spermic with administration of testosterone. The basic principle of male hormonal contraception is suppression of spermatogenesis. Exogenous testosterone/testosterone analogs alone or in combination with progestin have been tested for contraceptive efficacy by inhibiting gonadotropins release from pituitary gland. In this review article, advancement in different testosterone preparation tested alone or in combination for contraceptive efficacy has been focused. Ad- ministration of testosterone or testosterone analogs alone failed to provide uniform azoospermia or severe oligospermia (<1 million/ml sperm count) at lower doses regimens whereas higher doses causes side effects. Newer, androgen-pro- gestin combination has proved better contraceptive efficacy than testosterone alone. Further, long term studies with hormonal regimens and other alternative approaches are required with fewer side effects for development of safe and reversible contraceptive. Keywords: Hormonal Contraception; Suppression of Spermatogenesis; Testosterone; Androgen-Progestin Combination 1.