Contraceptive Patch (Evra)

What is it?

The patch is a weekly hormonal birth control method that is worn on the skin to prevent pregnancy.  The hormones are the same as those in the birth control pill.  A new patch is worn for a one week interval, for three weeks.  You need to go to a doctor or clinic to get the patch.

How does it work?

The patch prevents pregnancy by:

  • preventing the ovaries from releasing an egg:
  • making the cervical mucous thick so the sperm can't swim inside; and
  • making the lining of the uterus thin so that the egg can't stick.
Advantages:
  • about 99% effective if used correctly;
  • easy for most women to use;
  • few side effects; and
  • lighter and more regular periods with less cramps.
Disadvantages:
  • costs approximately $35.00 per month at a pharmacy;
  • may be less effective in women with body weight over 90 kg (198 lbs.);
  • you have to remember to change the patch every seven days; 
  • may cause minor side effects, such as spotting, breast discomfort, headache or nausea; it may cause skin irritation for some women.  Serious side effects, like blood clots, are rare; and
  • some medications decrease the effectiveness of the patch.  Tell your health care provider about any medication you are taking.  Using condoms will provide extra protection.
Remember:
  • the patch does not protect against sexually transmitted infections.  Use condoms every time; and
  • if you smoke - quit.  Smoking while on the patch increases the risk of serious effects on the heart and blood vessels.
For more information about birth control, click here...

For more information about the Sexual Health Clinic, click here...

 

 

Last Revised/Reviewed
Wednesday, 2008-07-23 9:40 AM