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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 methods.
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%.
However, the alkaline pH of semen can neutralize vaginal pH. One potential class of microbicides acts by reducing the pH of vaginal secretions, which may kill (or otherwise inactivate) pathogenic microorganisms. One such agent is BufferGel, a spermicidal and microbicidal gel formulated to maintain the natural protective acidity of the vagina ...
How does Phexxi work? Usually, when sperm enters the vagina, it raises the vagina's pH level, which allows the sperm to work its way up the reproductive canal. ... and it leaves the body with the ...
Barrier & spermicide: Vaginal insertion: Every act of intercourse: Spermicidal gel, suppository, or film [38] 21 (1 in 5) 16 (1 in 6.25) Spermicide: Vaginal insertion: Every act of intercourse: 1988 cervical cap and spermicide used by parous (discontinued in 2005) [note 5] Prentif: 32 (1 in 3) 26 (1 in 4) Barrier & spermicide: Vaginal insertion ...
This can cause the vaginal and pelvic floor muscles to become overly tense and difficult to relax during sex, says Kyle Bukowski, MD, an ob-gyn and the chief medical officer at Planned Parenthood ...