B. Pharm, S.P.E.R, Jamia Hamdard, New Delhi Race With Dreams! © 2015-2016 Reversible inhibition of sperm under guidance ( RISUG ), formerly referred to as the synthetic polymer styrene maleic anhydride ( SMA ), is the development name of a male contraceptive injection developed at IIT Kharagpur in India by the team of Dr. Sujoy K. Guha . Phase III clinical trials are underway in India, slowed by insufficient volunteers. It has been patented in India, China, Bangladesh, and the United States. A method based on RISUG, Vasalgel , is currently under development in the US however there has been little or no progress in terms of bringing the product to market. Mechanism of action RISUG works by an injection into the vas deferens, the vessel through which the sperm moves before ejaculation . RISUG is similar to vasectomy in that a local anesthetic is administered, an incision ...
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