Alternative Name: Vas deferens polymer contraceptive

Description: A polymer gel is injected into the vas deferens blocking the sperm. Vasalgel is a long-term method that can be used indefinitely, but that is more easily reversible than vasectomy.

Product Details

Duration Type: ,

Duration: Indefinite


Status Details

Began discovery in: 2010

Status Details:
  • Successful pre-clinical studies in rabbits, baboons and dogs have been completed. Phase I clinical studies are expected to start in 2018.

Additional Information

  • Parsemus Foundation website:

  • Colagross-Schouten, A., Lemoy, M., Keesler, R. I., Lissner, E., & Vandevoort, C. A. (2017). The contraceptive efficacy of intravas injection of Vasalgel™ for adult male rhesus monkeys.Basic and Clinical Andrology,27(1).

  • Khourdaji, I., Zillioux, J., Eisenfrats, K., Foley, D., & Smith, R. (2018). The future of male contraception: A fertile ground.Translational Andrology and Urology,7(S2).

  • Waller, D., Bolick,D., Lissner,E., Premanandan, C., & Gamerman, G. (2016). Azoospermia in rabbits following an intravas injection of Vasalgel™. Basic and Clinical Andrology, 26(6).

  • Waller, D., Bolick, D., Lissner, E., Premanandan, C., & Gamerman, G. (2017). Reversibility of Vasalgel™ male contraceptive in a rabbit model.Basic and Clinical Andrology,27(1).

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