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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] Transdermal preparations of estrogen are metabolized differently than oral ...
Estradiol/levonorgestrel (E2/LNG), sold under brand name Climara Pro, is a combination of estradiol (E2) and levonorgestrel (LNG) which is used in menopausal hormone therapy. [ 1 ] [ 2 ] [ 3 ] It is a 22-cm 2 transdermal patch containing 4.4 mg estradiol and 1.39 mg levonorgestrel and delivers 45 μg/day estradiol and 15 μg/day levonorgestrel.
[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]
A 2024 review published in the British Medical Journal found that the pill was associated with seven new cases of blood clots per 1,000 women each year. In short, both are generally safe and ...
In other words, a 100 μg/day Climara estradiol patch may be expected to produce circulating estradiol levels of around 100 pg/mL. [205] Transdermal estradiol patches produce an estradiol to estrone ratio of about 1:1. [10] [12] Following removal of an estradiol patch, circulating estradiol levels decrease to baseline within 24 hours. [10]
Estradiol levels with 50 to 100 μg/day transdermal estradiol patches applied to the forearm and to the scrotum in a crossover study in 2 men with prostate cancer. [14] In 35 men treated continuously with one 100 μg/day estradiol patch scrotally, the mean estradiol level was ~500 pg/mL (range ~125–1,200 pg/mL).
Estradiol cypionate (Depo-Estradiol, Estradiol Cypionate) – 5 mg/mL (1 mg/mL and 3 mg/mL discontinued) Estradiol valerate (Delestrogen, Estradiol Valerate) – 10 mg/mL, 20 mg/mL, 40 mg/mL; Polyestradiol phosphate (Estradurin) was previously available in the U.S. but was discontinued.
Available transdermal estradiol patches in the United States [1] [2] [a] Brand name Dose (µg/day) DOA (d) ... Climara [d] [5] [6] 25, 37.5, 50, 60, 75, 100 7