The contraceptive patch is a small, thin, square patch worn on the skin that releases synthetic hormones (estrogen and progestogen) into the bloodstream to prevent pregnancy. It works by stopping ovulation, thickening cervical mucus to block sperm, and sometimes affecting the uterine lining to prevent egg implantation. The patch is typically applied to clean, dry skin on areas such as the upper arm, buttocks, abdomen, or upper torso, and is replaced weekly for three weeks, followed by a patch-free week during which menstruation occurs. The patch is about 99% effective with correct use and is similar in effectiveness to combination birth control pills but offers the convenience of weekly rather than daily dosing. It does not protect against sexually transmitted infections (STIs). Key points about the contraceptive patch include:
- Contains hormones estrogen and progestogen
- Stops ovulation and thickens cervical mucus
- Applied once weekly for 3 weeks, with a patch-free week after
- Suitable skin areas: upper arm, buttocks, abdomen, upper torso (not breasts)
- Effectiveness around 99% with typical use
- Requires a prescription
- Can improve menstrual regularity, reduce cramps, acne, and symptoms of PMS
- Does not protect against STIs
- May cause skin irritation in some users
- Fertility typically returns soon after stopping use
This method is a convenient hormonal contraception option for those who prefer not to take a daily pill and is especially useful for women who have issues with vomiting or diarrhea that might reduce pill effectiveness.
