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Scientific progress

05 - 04 - 2017

Vasalgel: a male contraceptive in preclinical studies

Vasalgel is a non-hormonal male contraceptive under study. It is a hydrogel that blocks the vas deferens and causes sterility. The effect has been demonstrated in rabbits.

A study published today examined the option of regaining fertility in the same species. Fourteen months after the injection, the gel that blocked the vas deferens was dissolved. Mobile spermatozoa were found in normal quantities in the sperm but even after 6 months their ability to progression remained low and their acrosome (necessary for fertilization) had not returned to their normal appearance. Further studies will be carried out to verify the possibility of regaining to fertility.