“An implantable, non-hormonal male contraceptive has been shown in trials to last for at least two years.

The contraceptive, known as Adam, is a water-soluble hydrogel that is implanted in the sperm ducts, preventing sperm from mixing with semen.

The company behind the product, Contraline, says the approach offers a reversible alternative to condoms and vasectomies, with the hydrogel designed to break down in the body after a set period of time, restoring fertility.

Contraline has released details of its phase 1 clinical trial, revealing Adam can successfully block the release of sperm for 24 months, with no sperm detected in the semen of the two participants who have so far reached this time point in the trial. In addition, it said no serious adverse events had been recorded.”

From The Guardian.