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Estradiol valerate/hydroxyprogesterone caproate (EV/OHPC), sold under the brand names Gravibinon and Injectable No. 1 (or Chinese Injectable No. 1) among others, is a combined estrogen and progestogen medication which is used in the treatment of threatened miscarriage and other indications (e.g., as a means of pseudopregnancy) [1] [2] [3] and as a form of combined injectable birth control to ...
Estradiol valerate is and has been available in the form of vials and ampoules of oil solution for intramuscular injection in concentrations of 4, 5, 10, 20, and 40 mg/mL and in the form of oral tablets at doses of 0.5, 1, 2, and 4 mg per tablet.
A single intramuscular injection of estradiol valerate/norethisterone enanthate (5 mg/50 mg) (Mesigyna) has been found to strongly suppress testosterone levels in men. [33] Testosterone levels decreased from a baseline of ~503 ng/dL to a trough of ~30 ng/dL (a 94% decrease) which occurred at day 7 post-injection.
[60] [93] For comparison, the dose of medroxyprogesterone acetate (MPA; 6α-methyl-17α-hydroxyprogesterone acetate), a close analogue of hydroxyprogesterone caproate, used by intramuscular injection in microcrystalline aqueous suspension in once-a-month combined injectable contraceptives, is 25 mg. [60] [81] It has also been said that given by ...
Acute use (1–3 days) yields a potency about 1.5× stronger than that of morphine and chronic use (7 days+) yields a potency about 2.5 to 5× that of morphine. Similarly, the effect of tramadol increases after consecutive dosing due to the accumulation of its active metabolite and an increase of the oral bioavailability in chronic use.
The full endometrial transformation dosage of EB/P4 in oil solution is 1 to 2 mg EB and 20 to 25 mg P4 by intramuscular injection daily for 10 to 14 days, whereas the full endometrial transformation dosage of EB/P4 in microcrystalline aqueous suspension is a single intramuscular injection of 10 mg EB and 200 mg P4. [6]
Estradiol benzoate is and has been available as an oil solution for intramuscular injection provided as vials and ampoules at concentrations of 0.167, 0.2, 0.33, 1, 1.67, 2, 5, 10, 20, and 25 mg/mL. [ 23 ] [ 31 ] [ 8 ] It is also available as a microcrystalline aqueous suspension for intramuscular injection under the brand name Agofollin Depot.
Estradiol levels following an intramuscular injection of 10 mg estradiol enantate have been found to return to baseline levels of around 50 pg/mL after about 20 to 30 days. [ 43 ] [ 7 ] [ 5 ] [ 54 ] [ 10 ] However, a metabolic study found that traces of radiolabeled estradiol enantate remained detectable in blood for at least 30 to 40 days and ...