Spermicides
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- Q What are spermicides?
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A spermicide is a substance that kills sperm; it is placed into the vagina to prevent pregnancy. Spermicides do not protect against sexually transmitted infections or HIV (the virus that causes AIDS). Spermicides are most effective when they are used... Full Answer
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- Q How do spermicides work?
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These work by killing sperm and can be purchased without a prescription. There are several types: foam, gel, cream, suppository, or tablet. They can be used alone or to increase the effectiveness of barrier methods. They are 72–90% effective. Full Answer
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