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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.
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 ...
[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 (EC/MPA), sold under the brand name Cyclofem among others, is a form of combined injectable birth control. [2] It contains estradiol cypionate (EC), an estrogen, and medroxyprogesterone acetate (MPA), a progestin. [2] It is recommended for short-term use and is given once a month by injection into ...
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]
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 .
Major examples of progestins include the 17α-hydroxyprogesterone derivative medroxyprogesterone acetate and the 19-nortestosterone derivative norethisterone. The progestins are structural analogues of progesterone and have progestogenic activity similarly, but differ from progesterone in their pharmacological properties in various ways. [5]