Reversible Contraception in Males: An Obtainable Target?

Simple Summary: Historically, birth control has been geared toward targeting and subsequently reducing female fertility. The cost of unplanned pregnancies is significant, both in human and veterinary medicine. The development of an effective male contraceptive drug could provide an inclusive approach to the responsible use of contraception. The characteristics of an ideal contraceptive drug include reversibility, high efficacy, minimal adverse side effects, and easy administration. Although this seems like an uphill task, there are a few male contraceptive methods that are currently available, along with substantial interest and research being focused on novel targets. This review uses a comparative medicine approach to succinctly identify and discuss the different types of male contraceptives currently available, while also highlighting newer methods and potential targets for the future development of novel male contraceptives. The last few decades have brought contraception to the forefront of research, with great strides made in effectively targeting and optimizing the physiology, pharmacology, and delivery processes that prevent pregnancy. However, these advances still predominantly target female contraceptives for the prevention of contraception, whereas targeting the male sex has lagged far behind. This has led to a marked deficiency in safe and effective male contraceptive agents, resulting in a heavy dependence on female contraceptives to prevent unwanted and unplanned pregnancies. Current research in the veterinary field and in rodents highlights several promising avenues whereby novel, safe, and effective male contraceptive alternatives are being developed—with an emphasis on reduced side effects and reversibility potential. This review aims to discuss current and novel male contraceptives (both human and veterinary formulations) while highlighting their efficacy, advantages, and disadvantages. [ABSTRACT FROM AUTHOR]