Reversible Inhibition of Sperm Under Guidance (RISUG), formerly referred to as SMA, is the development name of a male contraceptive developed at IIT (Delhi) in India by Dr. Sujoy K Guha. It is currently undergoing Phase III clinical trials in India. It has been patented in India, China, Bangladesh and the United States.
RISUG works by an injection into the vas deferens,...