The contraceptive patch

Can a sticky plaster stuck to your bum really prevent pregnancy? Find out how this little patch of hormones works and whether it’s right for you.

Do you think she knows you have to stick it on?

What is the contraceptive patch?

The contraceptive patch (or pregnancy patch) is a matchbox-sized square of adhesive material containing the hormones oestrogen and progestogen, which are absorbed through the skin and into the bloodstream. This works in the same way as the combined oral contraceptive pill (‘the pill’) — by thickening the mucus around the cervix, which makes it difficult for sperm to get into the womb.

The pregnancy patch is 99% effective at preventing pregnancy (when used correctly) and goes under the trade name Ortho Evra.

How is the contraceptive patch used?

Women apply the patch on the first day of their period. It must be replaced every seven days, and used for three consecutive weeks. The fourth week is patch free, but the contraceptive effect is still active.

If you start wearing the patch on a day other than the first day of your period you need to use another method of contraception (such as condoms) for the first seven days of using the patch. You’ll also need to wear condoms for the first seven days if your periods come every 23 days or less. Ask your GP (doctor) for advice.

Where can I stick it?

It can be worn on most areas of the body, apart from the breasts (for health reasons) and forehead (for stupidity reasons). Common patch sticking points include the upper arm, belly, back or bum. Don’t apply to skin that is red, irritated or cut; or over moisturiser, make-up or powder, as these may prevent it from sticking well. (Skin products may also affect how hormones are absorbed by the skin.)

Unless you’ve fiddled with it and moved it around your body it won’t come off in the shower or the swimming pool. If it does, stick it back on (no other back-up contraception is needed should you go without for up to 24 hours). If it’s lost its stickiness you’ll need to see your GP for a new one.

What’s the difference between the pill and the patch?

As the hormones are absorbed into the bloodstream you’re still protected if you throw up or suffer from diarrhoea. There’s also less risk of ‘forgetting your patch’ – a common problem with pill users (who must remember to take a pill each day).

Will the patch make my periods worse?

You may have irregular bleeding and other hormone-related side effects, such as headaches, mood swings and nausea, at first, but this should settle down after two to three months.

Does it hurt when you take it off?

Nope. It’s no more painful than removing a plaster.

There may, however, be some risk of skin irritation. If this happens, change the position of the patch each time you apply a new one. If the irritation continues, speak to your GP.

Do we still have to use condoms?

Unfortunately, like the pill, the patch doesn’t offer any protection against sexually transmitted infections (STIs). So unless you’re 100% sure you’re both clear you’ll need to use a condom.

How long before my fertility returns?

Once you’ve removed it your normal cycle should return within a month. It can, however, take up to three months, but this is normal and nothing to worry about.

Can anyone have a patch?

Your GP or nurse at the family planning clinic will go through your medical history to make sure you’re suitable for the patch.

Only women who have a medical reason not to take the combined oral contraceptive pill shouldn’t use it.

Photo of girl holding a patch by Shutterstock.