Spermicide - GCSE Biology Definition

Spermicide is a chemical substance used to prevent pregnancy by stopping sperm from reaching an egg. It works by damaging the sperm or reducing its ability to move, making fertilisation less likely. Spermicide comes in forms such as gels, creams, foams, or films, and is inserted into the vagina before sexual intercourse. It is often used alongside other forms of contraception, such as condoms, to increase effectiveness. Although not a physical device, spermicide is classed as a barrier method of contraception because it creates a chemical barrier that helps block sperm from reaching the egg.