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Depot MPA (DMPA) and EC/MPA were developed by Upjohn in the 1960s. [12] [13] DMPA (brand name Depo-Provera) was introduced for use as a progestogen-only injectable contraceptive for the first time outside of the United States in 1969 and was subsequently approved for use in birth control in the United States in 1992.
DMPA, under brand names such as Depo-Provera and Depo-SubQ Provera 104, is used in hormonal birth control as a long-lasting progestogen-only injectable contraceptive to prevent pregnancy in women. [ 38 ] [ 39 ] It is given by intramuscular or subcutaneous injection and forms a long-lasting depot , from which it is slowly released over a period ...
The test is performed by administering a progestogen, such as progesterone either as an intramuscular injection or oral medroxyprogesterone acetate (Provera). If the patient has sufficient serum estradiol (greater than 50 pg/mL), withdrawal bleeding should occur 2–7 days after the progestin is withdrawn, indicating that the patient's ...
Medroxyprogesterone acetate (brand names Depo-Provera, Provera, Depo-subQ Provera 104) [4] – 150 mg (intramuscularly) or 104 mg (subcutaneously) every 3 months [3] Norethisterone enanthate (brand names NET EN, Noristerat, Norigest, Doryxas) [ 5 ] – 200 mg (intramuscularly) every 2 months [ 3 ]
The first pill is taken 72 hours after unprotected sex and the second pill is taken 12 hours after the first. [41] The Yuzpe regimen is often used in areas where dedicated EC methods are unavailable or where EC is not accepted. [46] The most effective form of EC is the insertion of a Cu-IUD within 5 days of unprotected sex. [41]
Due to its long half-life, zuclomifene can be detected in urine for at least 261 days after discontinuation [24] (261 days after discontinuation with a half-life of 30 days, there is still 0.24% of the peak level of zuclomifene being excreted, whereas with a half-life of ten hours, enclomifene reaches the same 0.24% level in less than four days ...
Risk of VTE with estrogen and progestogen therapy is highest at the start of treatment, particularly during the first year, and decreases over time. [ 89 ] [ 123 ] Older age , higher body weight , lower physical activity , and smoking are all associated with a higher risk of VTE with oral estrogen and progestogen therapy.
The lack of menstruation usually begins shortly after beginning the medication and can take up to a year to resume after stopping its use. [41] Hormonal contraceptives that contain only progestogen, like the oral contraceptive Micronor, and especially higher-dose formulations, such as the injectable Depo-Provera, commonly induce this side effect.