NIH, Population Council Sponsor Clinical Trials Of Male Contraception Gel.

National Institutes of Health and the Population Council are sponsoring “the largest-to-date clinical trial on a hormonal male contraception gel” set to start next year, with non-single participants in six countries taking part. The key ingredient in the gel, which is rubbed onto the “upper arms and shoulders once a day,” is “a synthetic progestin called nestorone – which blocks the testes from making enough testosterone to produce sperm – and a synthetic testosterone, which will counteract subsequent hormonal imbalances.” After the first clinical trials, however, “it will likely be at least five years before it is approved by the Food and Drug Administration and becomes available to the public.” http://time.com/5077942/male-contraceptive-hormonal-gel/