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A contraceptive patch, also known as "the patch", is a transdermal patch applied to the skin that releases synthetic oestrogen and progestogen hormones to prevent pregnancy. They have been shown to be as effective as the combined oral contraceptive pill with perfect use, and the patch may be more effective in typical use.
Norelgestromin is available only as a transdermal contraceptive patch in combination with ethinyl estradiol. [6] The Ortho Evra patch is a 20 cm 2, once-weekly adhesive that contains 6.0 mg norelgestromin and 0.6 mg ethinyl estradiol and delivers 200 μg/day norelgestromin and 35 μg/day ethinyl estradiol.
The patch-free interval must not be longer than seven days; otherwise, additional non-hormonal contraceptive methods must be used, such as condoms. [6] Transdermal patches must always be applied on the same day of the week to the buttock, abdomen (belly), upper arm or upper back. [ 6 ]
Combined hormonal contraception (CHC), or combined birth control, is a form of hormonal contraception which combines both an estrogen and a progestogen in varying formulations. [ 1 ] [ 2 ] The different types available include the pill , the patch and the vaginal ring , which are all widely available, [ 3 ] and an injection , which is available ...
In 2001, Ortho introduced the Ortho Evra transdermal contraceptive patch in the United States. In 1993, Ortho Pharmaceutical merged with McNeil Pharmaceutical in 1993 to form Ortho-McNeil Pharmaceutical. In Canada, Ortho Products began operations in Montreal in 1941. The company started with one product and three employees and it was one of the ...
lower estrogen exposure than with combined oral contraceptive pills or the contraceptive patch Ortho Evra. [13] [16] [17] a low incidence of estrogenic side effects such as nausea and breast tenderness [14] [18] a low incidence of irregular bleeding despite its lower estrogen dose [14] [18]
For women not using ongoing hormonal contraception, COCPs may be taken after intercourse as emergency contraception: this is known as the Yuzpe regimen. COCPs are available in a variety of formulations. [citation needed] The contraceptive patch is applied to the skin and worn continuously. A series of three patches are worn for one week each ...
A contraceptive sponge is another contraceptive method. Like the diaphragm, the contraceptive sponge contains spermicide and is inserted into the vagina and placed over the cervix to prevent sperm from entering the uterus. The sponge must be kept in place 6 hours after sexual intercourse before it can be removed and discarded.