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Administration of high-dose testosterone in men over a course of weeks can cause an increase in aggression and hypomanic symptoms, though these were seen in only a minority of subjects. [15] Acute high-dose anabolic-androgenic steroid administration in males attenuates endogenous sex hormone production and affects the thyroid hormone axis.
[52] [49] [53] [54] Nonetheless, it is useful as an antiandrogen in women, who have low androgen levels compared to men. [55] [56] In addition, instances of gynecomastia, decreased libido, and erectile dysfunction have been reported in men taking very high doses of spironolactone (200 to 400 mg/day). [55]
[2] [27] In addition, while a 60 mg dose has no effect on testosterone levels in men, this dose does measurably increase testosterone levels in prepubertal boys and women. [27] The oral bioavailability of testosterone in young women after a single 25 mg dose was found to be 3.6 ± 2.5%. [29]
[8] [15] Nandrolone has strong anabolic effects and weak androgenic effects, which give them a mild side effect profile and make them especially suitable for use in women and children. [ 8 ] [ 15 ] [ 16 ] There are metabolites of Nandrolone that act as long-lasting prodrugs in the body, [ 8 ] such as 5α-Dihydronandrolone .
A dosage of two to six 100 μg/day transdermal estradiol patches can achieve mean levels of estradiol in the area of 200 to 400 pg/mL and can be used as a form of high-dose estrogen therapy, for instance to suppress testosterone levels in the treatment of prostate cancer in men and in feminizing hormone therapy for transgender women. [14] [214 ...
Nandrolone decanoate, sold under the brand names Rolon [7] and Deca-Durabolin, among others, is an androgen and anabolic steroid (AAS) medication which is used primarily in the treatment of anemias and wasting syndromes, as well as osteoporosis in menopausal women.
Likewise, other studies found that levels of estradiol and estrone are very similar after oral administration of roughly equimolar doses of estradiol (1.5 mg) and estradiol valerate (2 mg). [110] [111] [112] A study of high-dose oral estradiol valerate found levels of estradiol of about 250 pg/mL after a single 10-mg dose in three women. [107]
The high doses of testosterone required to increase sexual desire in women may have a significant risk of masculinization with long-term therapy. [41] [40] For this reason, and due to the unknown health effects and safety of testosterone therapy, its use may be inappropriate.