Spermicide, or sperm-killing products, are a barrier method of birth control. Spermicide forms are:
- Foam
- Cream
- Jelly
- Film
- Suppository
- Tablet
Foam spermicides bubble in the vagina. Cream, jelly, film and suppository spermicides melt in the vagina. All of them block the entrance to the uterus and kill sperm to prevent pregnancy.