patch contraceptives

The contraceptive patch is a small, adhesive patch that a person applies to their skin, typically on the buttocks, stomach, upper arm, or chest. It releases hormones—usually estrogen and progestin—that prevent pregnancy by stopping ovulation, thickening cervical mucus to block sperm, and thinning the uterine lining. The patch is usually worn for one week, and a new patch is applied weekly for three weeks, with one week off during which menstruation occurs. It is a convenient and effective form of birth control when used correctly, with a typical failure rate of about 9% per year.