The male wears this sheath over the erect penis during intercourse to prevent the sperm from being deposited in the vagina. It is the only form of temporary birth control a man can use. Some condoms are made of animal intestine, but these are not effective for preventing STDs. Proper and consistent usage increases the effectiveness. The condom is readily available, inexpensive and easy to use.
Women can buy and carry condoms.
No medical appointment or prescription is required to purchase condoms. Some condoms contain a spermicide which offers further protection in case a condom breaks during intercourse. It helps partners from reinfecting one another with an STD, such as trichomoniasis, during the treatment period. There are no systemic side effects from condom use. Disadvantages Since the condom needs to be used right at the time of sexual intercourse, it may decrease the spontaneity of sex for some couples.