Male contraceptive historical perspective

• Gossypol, derived from cotton seeds, was used in trials by the Chinese government for about fifteen years. While it was found to be a reliable contraceptive, it has serious health effects, and ten to twenty percent of users become permanently sterile. Research on it as a temporary contraceptive has been abandoned.
• Zavesca (aka Miglustat or NB-DNJ) is a drug approved for treatment of several rare lipid storage disorder diseases. In mice, it provided effective and fully reversible contraception. But it seems this effect was only true for several genetically related strains of laboratory mice. Zavesca showed no contraceptive effect in other mammals.^[1]

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