Thorough investigation and approval of products is time-consuming and expensive, and it requires substantial investment from scientists, pharmaceutical companies, and investors alike. Approved products providing sterilization or long-term (1+ years) contraception in cats and/or dogs include: Suprelorin, a contraceptive implant for male dogs lasting a minimum of 6 or 12 months (dose-dependent) approved in Australia, New Zealand, and the European Union; Infertile, a permanent non-surgical sterilant for male dogs approved in Brazil; and Zeuterin, a non-surgical sterilant for male dogs approved in the U.S., Mexico, Bolivia, Panama, and Colombia (please note that Ark Sciences, which produces Zeuterin, is no longer selling the product). To learn more, visit our Available Products webpage.
In addition, a compounded sterilant consisting of calcium chloride dihydrate and ethyl alcohol is being used on a very limited scale, and with limited peer-reviewed safety and efficacy data, in dogs and cats. Information and ACC&D’s position statement on calcium chloride are available here.