[Effects of a condom coated with menfegol, a spermicide, on sperm motility and viability].

The effects of menfegol-coated condoms on sperm motility and viability were investigated. At 0.5 mg/ml and higher concentrations mennfegol a spermicidal agent was found not only to suppress sperm motility buy also to kill the sperm completely indicating that it has strong spermicidal potency. Normal semen samples were ejaculated directly into menfegol-coated or uncoated condoms. The sperm motility and viability were examined immediately after ejaculation. In the menfegol-coated condom sperm motility was completely suppressed and no viable sperm were observed whereas in the uncoated condom most of the sperm were still alive although their motility was virtually or completely suppressed. These results indicate that the menefegol-coated condom provides a new birth control method which enhances contraceptive efficacy with added spermicidal activity. (authors) (summary in ENG)