Spermicide is a substance that kills sperm. Usually they are used to increase the effectiveness of contraceptive barrier methods such as diaphragms, condoms, and cervical caps. Various contraceptive sponges use spermicides.

It has been suggested, however, that the amount of nonoxynol-9 used on condoms is not enough to significantly increase their effectiveness as contraception. ^*

The most common active ingredient of spermicides is nonoxynol-9, to which some people are allergic. Previously, it was believed that nonoxynol-9 reduced the risk of HIV infection as it was thought to kill the virus. However, nonoxynol-9 has been shown to increase the risk of contracting HIV because it creates tiny abrasions in the vaginal and rectal walls that make transmission of HIV and other STDs more likely. ^*

Other spermicides include octoxynol-8, benzalkonium chloride, and sodium cholate. A common urban legend suggests that Coca-Cola serves as an effective spermicide. This is false, as proven by the MythBusters in one episode. Other soft-drinks, such as Mountain Dew and Bitter Lemon, have also been suggested as being spermicides.

External links

• Urban Legends Reference Pages: Cokelore (Killer Sperm)

Chemical contraception

Spermizid | Espermicida | Spermicida | Spermicidas