Currently, there is only one contraceptive or contraceptive available, this is the Ortho Evra Contraceptive. These contraceptive patches work by applying them to the surface of the skin and then preventing pregnancy by releasing estrogen and progesterone.
Women usually apply patches to the outside of the upper arm, abdomen, thighs or buttocks. The application should be performed on the first day of her menstrual cycle. From that day on, she would like to admit that this is her "Patch Change Day." This means that after a week, she will need to remove the patch and reapply for a patch. She needs to repeat this after a week, and then in the last week, she will not wear a patch at all.
We can get a deeper understanding of how the mechanisms behind the birth control patch work. During ovulation, females release oocytes [eggs] and play a key role during pregnancy. Birth control patches take precedence over female ovulation, so pregnancy can be avoided if oocytes are not released.
There is another mechanism for handling contraceptive patches for sperm. The penetration of the sperm is inhibited by changes in cervical mucus caused by the contraceptive patch.
When placed on the skin, the Ortho Evra Contraceptive Patch releases an estrogen called ethinyl estradiol and a progestin called norepinephrine into the systemic circulation. This version is released daily on a regular basis.
Orignal From: Contraceptive stickers - how to apply and how it works
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