Birth Control Spermicides (cont.)
Omnia M Samra, MD
Suzanne R Trupin, MD
Francisco Talavera, PharmD, PhD
Lee P Shulman, MD
IN THIS ARTICLE
How Spermicides Work
Spermicides contain a chemical that kills sperm or makes them inactive so they cannot enter a woman’s cervix. Nonoxynol-9 is the active chemical in most spermicide products in the United States. The concentration of the chemical depends on the product.
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