The National Institutes of Health is trialing a male birth control product on 420 test subjects. This topical gel, containing both nesterone and testosterone is designed to be applied to the shoulders and back, so that the individuals using this product had better not work too hard or sweat in the gym if they want any semblance of dose uniformity. Dose adjustments for body mass are not addressed. Nesterone, a progestin, is included to block testosterone production in the testes, so that sperm is no longer produced. This is then replaced by just enough testosterone so that the user is able to comply, in the event that sex is requested of him. Whether he’ll remember how it’s done is anyone’s guess. One would expect the effectiveness of this product to be largely dependent upon reducing the sex drive as well as fertility. It’s expected to meet the same limp market as all of the previous male birth control drugs, but might become a go-to product in extended care facilities.