Effectiveness in Preventing Pregnancy
- Of 100 women who use this method each year, about five are likely to get pregnant
- The risk is smaller in women who use the patch correctly (and apply it to the skin at the right time)
- You put on a new patch and take off the old patch once a week for three weeks
- During the fourth week, you do not wear a patch and your period will probably begin
Clinic Visit Required
- Yes, prescriptions are required to purchase the patch
What is the patch?
The patch is a thin plastic square that contains the same hormones (progestin and estrogen) found in most birth control pills. Hormones are chemicals that control how different parts of your body work. The patch has a sticky side that can be attached to the skin of the stomach, buttocks, or the outside of the upper arm. The patch can also go on the front or back of the upper body like the shoulder blade or chest area (but not on the breasts).
The hormones in the patch are absorbed through the skin and prevent pregnancy by keeping the ovaries from releasing eggs. The patch also works by causing the cervical mucus to thicken, which blocks sperm from meeting and fertilizing an egg.
How do I use it?
You put a new patch on each week for three weeks (take off the old patch and throw it away). During the fourth week, you do not wear a patch and your period will probably start. After the fourth week, start over again and put on a new patch (even if there is still some bleeding from your period).
- To help you remember, try to put a new patch on the same day each week
- Put the patch on clean, dry skin and press to make sure it will stay on. Be careful not to touch the sticky side while putting it on your skin
- Look each day to make sure the patch is still in place
- It is okay to bathe and swim while wearing a patch
Discuss your medical history with your health care provider before using the patch and let them know if you develop any side effects.
Drawbacks of the cervical cap
- Does not protect against sexually transmitted infections (STIs)
- Requires a clinic visit and prescription
- Certain antibiotics and supplements (such as St. John's Wort) may make the birth control patch less effective
- It may take a month or two after stopping the patch before normal periods return
- Some women experience skin irritation where the patch is worn. Others may have breast tenderness