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Birth Control

Contraceptive Patch

The contraceptive patch is a small skin patch that releases hormones to prevent pregnancy.

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Dr. J. Vázquez

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Dr. Josefina Vázquez is an experienced physician with over three years in emergency medicine, reanimation, and specialized transport.

Contraceptive Patch

What is the Contraceptive Patch?

The contraceptive patch is a form of hormonal birth control that sticks to the skin and releases oestrogen and progestogen into the bloodstream. These hormones work by:

  • Preventing ovulation (the release of an egg).
  • Thickening cervical mucus to block sperm from reaching an egg.
  • Thinning the uterine lining to make implantation less likely.

The patch is worn on the skin and replaced once a week. It provides continuous contraception without the need to remember a daily pill.

Who is the Contraceptive Patch suitable for?

The contraceptive patch may be a good option if you:

  • Prefer a once-a-week method rather than taking a daily pill.
  • Want highly effective contraception without requiring a procedure.
  • Experience heavy or painful periods and want a method that can help regulate your cycle.

However, it may not be suitable if you:

  • Are over 35 and smoke, as this increases the risk of blood clots.
  • Have a history of blood clots, high blood pressure, or migraines with aura.
  • The patch may be less effective if you weigh over 90kg (14 stone) (but not necessarily if your BMI is over 25).

How does it work, and what are the options?

The patch is worn continuously for a week, then replaced with a new one. It can be applied to the:

  • Upper arm
  • Buttocks
  • Stomach
  • Upper back

There is a cycle of use:

  • Apply a new patch each week for 3 weeks.
  • No patch in the 4th week (you may have a withdrawal bleed, like a period).
  • Start a new patch cycle after the patch-free week.
  • Over 99% effective when used correctly.
  • Only needs to be changed once a week.
  • Can make periods lighter and less painful.
  • Still works if you vomit or have diarrhoea, unlike the pill.
  • Does not protect against STIs – use condoms if needed.
  • May cause skin reactions such as itching or redness.
  • Periods may become lighter, irregular, or stop after using the patch for some time.
  • Can increase the risk of blood clots, especially if you smoke.

Frequently Asked Questions

Get answers to common questions about Contraceptive Patch

If the patch has been off for less than 48 hours, reapply it or use a new one. If it has been more than 48 hours, apply a new patch and use extra contraception (e.g. condoms) for 7 days.
  • If you start on the first day of your period, you are protected immediately.
  • If you start on any other day, use additional contraception for the first 7 days.
Yes, the patch is designed to stay on during activities like swimming, showering, and exercising. However, check it regularly to ensure it is still in place.
Some women experience headaches, breast tenderness, nausea, or mood changes, but these usually improve over time. Skin irritation at the patch site is also common.
Yes. Instead of taking a patch-free week, apply a new patch immediately and continue your cycle. This can delay or prevent your period.

Scientific Sources