It has an efficacy of over 99 percent if properly used. It acts in the same way as the oral contraceptive pill. It contains estradiol and a progestin, which are absorbed slowly through the skin. The contraceptive patch is a patch designed to stick firmly to the skin, and is waterproof. It is almost 100 percent effective if properly used, but in reality typical results are 90 percent contraceptive efficacy. It is worn for three weeks and removed for the last week to allow bleeding to occur. This device releases estrogen and progestogen in a sustained slow manner to suppress the natural ovarian cycle and inhibit ovulation. They are theoretically 99.7 percent effective, but the actual efficacy is 92 percent because many women miss pills quite often. They have the disadvantage of having to be taken at the same time every day for adequate contraceptive effect, and so depend upon the woman’s memory. These are taken daily to sustain a persistently low level of these hormones in the blood and so suppress the natural hypothalamopituitary-ovarian cycle which maintains ovulation. The combined oral contraceptive pill consists of estrogen in the form of ethinyl estradiol, and a progestin such as levonorgestrel or desogestrel. They may contain both estrogen and progestogen, or only progestogen.
Forms of birth control skin#
These include several forms which are administered orally in a pill or other methods, such as a vaginal ring or a skin patch. They include hormonal and non-hormonal methods. Women have many contraceptive options nowadays, and women can find options to suit their health, lifestyle, and desire to postpone pregnancy for a few months or several years. Liji Thomas, MD Reviewed by Susha Cheriyedath, M.Sc.
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