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Atypical (dual estrogen and nitrogen mustard alkylating antineoplastic): Estramustine phosphate sodium (Emcyt) – 140 mg; Oral estradiol valerate (except in combination with dienogest as an oral contraceptive) is not available in the U.S. and is used primarily in Europe. [2]
An estrogen patch, or oestrogen patch, is a transdermal delivery system for estrogens such as estradiol and ethinylestradiol which can be used in menopausal hormone therapy, feminizing hormone therapy for transgender women, hormonal birth control, and other uses. [1]
Available transdermal estradiol patches in the United States [1] [2] [a]; Brand name Dose (µg/day) DOA (d) Size [b] [c] (cm 2) Levels (pg/mL) Intro. Alora [3] [4]: 25, 50, 75, 100 3–4
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.
[223] [224] Estraderm, a reservoir patch and the first transdermal estradiol patch to be marketed, was introduced in Europe in 1985 and in the United States in 1986. [225] [226] The first transdermal matrix estradiol patches to be introduced were Climara and Vivelle between 1994 and 1996, and were followed by many others. [223] [227]
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 ]