The Birth Control Patch EVRA™
What is it?
The birth control patch is a small plastic square-shaped patch that is worn to prevent pregnancy. The patch works the same way as the birth control pill. It slowly releases the hormones estrogen and progestin through your skin. These hormones are similar to hormones already made by your body. If used perfectly (i.e., no missed patches, patches applied and changed correctly), the patch is more than 99% effective at preventing pregnancy (92% with typical use).
How does it work?
The patch works in three ways:
- Stops the egg from being released from the ovary,
- thickens the cervical mucus making it difficult for sperm to reach the egg, and
- thins the lining of the uterus making implantation difficult.
Why use the patch?
- For some people, the patch is easier to remember than taking the pill. It only needs to be changed once a week compared to the pill that has to be taken every day.
- It's easy to use, non-invasive, reversible, and very effective.
- It regulates your period.
- Your period can be lighter and cause less cramping.
How do I use the patch?
The patch can be started during the first five days of your period, the first Sunday after your period starts, or by the "Quick Start" method. Talk to your health care provider about the method which is best for you. Always use a backup method of birth control (i.e., condoms) for the first seven days of using the patch as it can take time to become effective.
- Apply the patch to a clean and dry area of skin where it won't be rubbed by tight clothing. It can be worn on the stomach, buttock, upper back or upper outer arm. Do not place it on the breast.
- To make sure the patch sticks, no make-up, cream, lotion, etc. should be applied to the skin where the patch is placed. Press down firmly on the patch for 10 seconds when applying, and make sure the edges stick well.
- The patch stays in place for one week if applied properly, even if you exercise, shower, or swim.
- A new patch is put on once a week for three weeks. No patch is worn on the fourth week and this is when you will have your period.
- The patch should be changed on the same day each week.
- The patch should not be off for more than seven days in a row. After the seventh day, a new patch is applied to restart the four week cycle, even if you still have your period.
Possible side effects:
The patch may cause:
- nausea,
- headaches,
- breast tenderness,
- mood changes, or
- spotting or bleeding between periods.
Symptoms usually go away within the first couple of months, but if symptoms persist you should talk to your healthcare provider. The patch may also cause skin irritation at the site of the patch. Changing the patch site each week can help prevent irritation.
Possible risks:
Hormonal birth control like the patch can increase your risk of a blood clot. Even though this is a rare side effect, it is important to be aware of the warning signs of blood clots. If you experience pain, swelling, or redness in the legs, severe headache, chest pain, shortness of breath, changes in vision, or abdominal pain while on the patch, seek medical attention immediately.
What do I do if my patch falls off or I forget to change my patch?
If the patch has been off for less than 24 hours:
- Reapply the patch or apply a new patch as soon as possible, or
- continue the same cycle and keep the same patch change day.
If your patch has been off for more than 24 hours please see Missed Birth Control- Birth Control Patch (Evra™) health information sheet or Stay On Schedule app at www.sexualityandu.ca.
Not sure what to do? Call the KFL&A Public Health Sexual Health Information line at 613-549-1232 or 1-800-267-7875, extension 1275 for more information.
What else should I know?
Some women are not able to use the patch, including women with a history of blood clots or women over the age of 35 who smoke. Talk to your health care provider to see if the patch is right for you.
Where can I get it?
You can get a prescription from your family doctor or at a clinic. Contact the KFL&A Public Health Sexual Health Information line for more information.
Remember that the patch does not protect you from sexually transmitted infections (STIs). If you have made an error in using your patch and have not used back-up birth control, ask your healthcare provider, pharmacist, or KFL&A Public Health about emergency contraception (Plan B). Condoms are the best way to protect against STIs.
Revised: 2016-01-18