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[4] [5] They have functional antiestrogenic effects in certain tissues like the endometrium, and this underlies their use in menopausal hormone therapy. [1] Progesterone was first introduced for medical use in 1934 and the first progestin, ethisterone, was introduced for medical use in 1939.
[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 of several months. It takes one week to take effect if given after the first five days of the period cycle, and is effective immediately if given during the first five days of the period cycle.
Progesterone (P4), sold under the brand name Prometrium among others, is a medication and naturally occurring steroid hormone. [20] It is a progestogen and is used in combination with estrogens mainly in hormone therapy for menopausal symptoms and low sex hormone levels in women.
Progesterone therapy can prevent cardiovascular disease and atherosclerosis, and raise high-density lipoprotein The use of micronized progesterone does not affect cardiovascular risk The side effects reported in the Women's Health Initiative study were due to the synthetic nature of the hormones used
Progesterone is used as part of hormone replacement therapy in people who have low progesterone levels, and for other reasons. For purposes of comparison with normal physiological circumstances, luteal phase levels of progesterone are 4 to 30 ng/mL, while follicular phase levels of progesterone are 0.02 to 0.9 ng/mL, menopausal levels are 0.03 to 0.3 ng/mL, and levels of progesterone in men ...
A menopause expert sets the record straight on the latest craze in hormone replacement and just how much (and in what form) we should be taking it.
Can an 80-year-old man get hard? The short answer is yes. But there are some reasons why it may be more difficult for older men to get aroused during stimulation than younger men.
It is an estradiol ester and prodrug of estradiol with a longer duration of action than estradiol when administered by intramuscular injection in oil solution or aqueous suspension. [20] P4 is a progestogen, or an agonist of the progesterone receptors, the biological target of progestogens like endogenous progesterone. [20]
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