Spermicide is a contraceptive substance that destroys
sperm, inserted vaginally prior to intercourse to prevent pregnancy. As a contraceptive, spermicide may be used alone. However, the pregnancy rate experienced by couples using only spermicide is higher than that of couples using other methods. Usually, spermicides are combined with contraceptive
barrier methods such as
diaphragms,
condoms,
cervical caps, and
sponges. Combined methods are believed to result in lower pregnancy rates than either method alone.