nonoxynol

Example:Women sometimes use spermicides in conjunction with condoms to enhance their contraceptive effectiveness.

Definition:A substance that destroys sperm cells, often used to prevent conception when combined with a barrier method such as a diaphragm or vaginal film.

Example:Research is ongoing to develop more effective microbicides that can be applied vaginally to protect against both pregnancy and STIs.

Definition:A substance designed to prevent the transmission of sexually transmitted infections (STIs), particularly HIV, by killing or inactivating microorganisms.