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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 metho
Barrier methods have a risk of allergic reactions. Users sensitive to latex may use barriers made of less allergenic materials - polyurethane condoms, or silicone diaphragms, for example. Barrier methods are also often combined with spermicides, which have possible side effects of genital irritation, vaginal infection, and urinary tract infection.
Nonoxynol-9 is a common ingredient of most vaginal and anal lubricants due to its spermicidal properties. A 2004 study found that over a six-month period, the typical-use failure rates for five nonoxynol-9 vaginal contraceptives (film, suppository, and gels at three different concentrations) ranged from 10% to 20%.
Dual protection is the use of methods that prevent both sexually transmitted infections and pregnancy. [127] This can be with condoms either alone or along with another birth control method or by the avoidance of penetrative sex. [128] [129] If pregnancy is a high concern, using two methods at the same time is reasonable. [128]
Monalazone, used as monalazone disodium (INN Tooltip International Nonproprietary Name; the disodium salt) and sold under the brand names Naclobenz-Natrium, Spergisin, and Speton, is a vaginal disinfectant or antiseptic and spermicidal contraceptive.
Nonoxynol-9 and other kinds of spermicide would be less potent after an expiration date, which could lead to unwanted pregnancy. Lube also has some unusual uses outside the bedroom