Spermicide is a term used to describe a contraceptive agent that is specifically designed to kill or inactivate sperm. There are various synonyms for spermicide, including contraceptive jelly, spermicidal cream, spermicidal foam, spermicidal gel, and spermicidal lube. These products are available in different forms and are used in different ways to prevent unintended pregnancy. Spermicide is often used in combination with other forms of contraception, such as condoms or diaphragms, to increase effectiveness. While spermicide is generally considered safe and effective, it may cause skin irritation or allergic reactions in some individuals. It is important to follow the instructions carefully and use spermicide as directed to ensure its effectiveness as a contraceptive.