Spermicide comes in different forms including gels, creams, films, foams or tablets that are inserted into the vagina at least 10-15 minutes before sex. It is a great addition to other birth controls to make them more effective. A main downside is that it doesn't protect against STDs and it's active substance nonoxynol-9 may even increase the risk of STDs.
Before sex
Frequency
79% - 86%
Effectiveness
None
Blood clot risk
None
Effect on fertility
How does the Spermicide work?
Nonoxynol-9 is the main active ingredient in spermicide. It works by helping to block the cervix and slow down sperm so they can't and fertilize an egg.
Spermicide alternatives
Contraceptives that work in similar ways, or brands that have close or exactly the same hormonal ingredients
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Spermicide side effects
Possible side effects with Spermicide
Spermicide side effects
Possible side effects with Spermicide
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