A member asked:

What exactly do spermicides do? why are they important?

2 doctors weighed in across 2 answers
Dr. Philip Chenette answered

Specializes in Fertility Medicine

Detergents: Spermicides are detergents that disrupt the sperm membranes.

Answered 8/16/2011

6.4k views

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They are "killers": Spermicides have two actions, the first is that sperm have difficulty physically swimming through them. Secondly, the chemical in the product "kills" the sperm.

Answered 10/29/2018

256 views

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