Contraceptive foam is a non-prescription form of birth control that is inserted into the vagina before sexual intercourse. Also known as a spermicide, contraceptive foam interferes with the sperm's movement.
Mechanism
Planned Parenthood states that the chemicals in contraceptive foam immobilize sperm, preventing fertilization. The contraceptive foam also creates a barrier around the cervix.
Effectiveness
According to Planned Parenthood, 15 pregnancies occur in every 100 women over the course of a year when contraceptive foam is always used correctly. If the contraceptive foam is not always used correctly, 29 out of 100 women will become pregnant in a year.
Usage
The Mayo Clinic notes that contraceptive foam should only be used right before intercourse, as there is a limit time frame of effectiveness. Contraceptive foam will not work if used after intercourse. Vaginal douching after use is not advised, as it may prevent the contraceptive foam from working.
Side Effects
Possible side effects from contraceptive foam use include cloudy or bloody urine, vaginal irritation or discharge, bladder or lower abdomen pain and an increased frequency of urination, according to the Mayo Clinic.
Warning
Planned Parenthood warns that contraceptive foam use does not reduce the risk of contracting sexually transmitted diseases; using a condom with contraceptive foam does decrease that risk.
