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Hormonal depot injections of estradiol can last anywhere from one week to over one month. [7] Medroxyprogesterone acetate is available as a depot injection which is injected once every three months to provide continuous hormonal contraception and releases for up to nine months after injection. [8]
Medroxyprogesterone acetate (MPA), also known as depot medroxyprogesterone acetate (DMPA) in injectable form and sold under the brand name Depo-Provera among others, is a hormonal medication of the progestin type. [10] [4] It is used as a method of birth control and as a part of menopausal hormone therapy.
CICs are different from progestogen-only injectable contraceptives (POICs), such as depot medroxyprogesterone acetate (DMPA; brand names Depo-Provera, Depo-SubQ Provera 104) and norethisterone enantate (NETE; brand name Noristerat), which are not combined with an estrogen and are given once every two to three months instead of once a month. [2]
Progestogens that have been studied for potential use as POICs but were never marketed as such include the progesterone derivatives algestone acetophenide (dihydroxyprogesterone acetophenide) (100 mg/month), chlormadinone acetate (250 mg/3 months), hydroxyprogesterone caproate (250–500 mg/month), gestonorone caproate (2.5–200 mg/1–2 ...
Hormonal contraceptives can come in multiple forms including injectables. Depot medroxyprogesterone acetate (DMPA), a progestin-only injectable, has been found to cause amenorrhea (cessation of menstruation); however, the irregular bleeding pattern returns to normal over time. [15] [16] DMPA has also been associated with weight gain. [16]
[48] [50] [59] A 2016 systematic review found based on limited evidence from 6 studies that hormonal birth control, including combined birth control pills, depot medroxyprogesterone acetate, and levonorgestrel-containing intrauterine devices, was not associated with worse outcomes compared to non-use in women with depressive or bipolar ...
Estradiol cypionate/medroxyprogesterone acetate (Cyclo-Provera, Cyclofem, Lunelle) Estradiol enanthate/algestone acetophenide (Anafertin, Deladroxate, Perlutan, Topasel, Yectames) Estradiol valerate/hydroxyprogesterone caproate (Chinese Injectable No. 1)
Compared to MPA, medroxyprogesterone is over two orders of magnitude less potent as a progestogen. [8] Medroxyprogesterone is also notable in that it is a minor metabolite of MPA. [ 9 ] In addition to its progestagenic activity, medroxyprogesterone is a weak antiandrogen in vitro on human androgen receptor .