Contraceptive patch: Encyclopedia II - Contraceptive patch - Method of use

Contraceptive patch - Method of use

In the United States and Canada, Ortho Evra is available only by prescription and is sold in boxes of three patches. Johnson & Johnson is the largest manufacturer of these patches.

A woman applies her first patch onto her upper outer arm, buttocks, abdomen or thigh on either the first day of her menstrual cycle (day 1) or on the first Sunday following that day, whichever she prefers. The day of application is known from that point as patch change day. Seven days later, when patch change day comes again , the woman removes the patch and applies another in its place. This process is repeated again on the next patch change day. On the following patch change day, the patch is removed and not replaced. The woman waits 7 days without a patch in place, and on the next patch change day she applies a new patch.

Contraceptive patch - Backup contraception

• If a woman chooses to begin with her patch change day as day 1 of her menstrual cycle, the patch is able to take effect in time to prevent ovulation (see Mechanism of Action below) and no form of backup contraception is needed at all.
  • In the case that a woman wishes to begin using the contraceptive patch following a first trimester abortion or miscarriage, patch application can be done immediately afterwards. This can be considered the same as a day 1 start above, and no backup contraception is required.
• If a woman chooses to begin with her patch change day as the first Sunday following day 1, it is necessary to use a backup form of contraception such as spermicide or condoms for the first week of patch wear.

Adapted from the Wikipedia article "Method of use", under the G.N U Free Docmentation License. Please also see http://en.wikipedia.org/wiki