ESTROGEN-PROGESTERONE HORMONAL CONTRACEPTION

The hormones alter the menstrual cycle to eliminate ovulation and prevent pregnancy.

BIRTH CONTROL PILLS

Birth control pills contain a combination of an estrogen and a progesterone. There are many different formulations. The pill is taken daily. With typical use, the estimated risk of pregnancy is about 9% per-year.

BIRTH CONTROL PATCHES

Contraceptive patches contain a combination of estrogen and a progesterone. The patch is applied to the skin and changed weekly. Two formulations, Xulane and Twirla, are available. With typical use, the estimated risk of pregnancy is about 9% per-year.

BIRTH CONTROL RINGS

Contraceptive rings contain a combination of estrogen and a progesterone. The flexible plastic ring is placed in the vagina and releases the hormones over three weeks. Two formulations, Nuva ring and Annovera, are available. With typical use, the estimated risk of pregnancy is about 8% per-year.