is an anabolic steroid that goes by the brand names Proviron, Pluriviron, and Vistimon. It is currently illegal in the United States, since its purpose is chiefly for athletic and muscle mass enhancement. It is taken orally in tablet form. It is part of a class of drugs known as androgens, or male hormones
, and is usually take in conjuction with testosterone, an important male hormone
. It can be used to treat disorders in which the body does not produce enough male hormones naturally, or it can be used to enhance the already-normal levels of male hormones for muscle build-up. It does this by inhibiting estrogen production, increasing the potency of testosterone, increasing muscle density and hardness, and decreasing libido. It is said in other places to increase the libido, improve health, give a feeling of overall well-being and energy, and to restore youthfulness in adult men. Some doctors prescribe mesterolone for the symptoms of ale menopause
, which men experience as testosterone levels decrease with age. It can also be prescribed for some types of sexual dysfunction, such as disinterest, impotency, and low sperm count.
If you are taking or plan to take mesterolone, there are things you should tell your doctor. First of all, make sure your doctor knows is you are taking any other medications or treatments, even if those are non-prescription, over-the-counter, herbal, or alternative treatments. Your doctor will also need to know if you have ever had an allergic reaction to androgens or any other medications. Another important consideration is whether you have prostate cancer
or any other cancer; an infusion of hormones can exacerbate these conditions. You also should tell your doctor if you have a kidney
, or liver
condition, and if you have high blood pressure
, or diabetes
Side effects for mesterolone can be problematic. The manufacturers advise that if you experience frequent or persistent erections, you should see your doctor immediately, as your dosage may need to be adjusted. Other side effects of mesterolone can include headache
, changes in sexual desire, oily skin and acne
, weakness, swollen ankles, increased breast
size in men, and either increased hair growth or hair loss
. You should also contact your doctor if you experience black or tarry stools, difficulty urinating, or jaundice. For women, side effects can also include hormonal changes such as deepening of the voice, irregular periods or break-out bleeding, and enlargement of the clitoris.
Mesterolone can be taken by men or women, and is used by both sexes in preparation for weight-lifting and body-building contests. Women generally take smaller doses than men, especially since mesterolone causes virilization—or male-like characteristics—to appear rapidly. In contest preparation, women usually take one 25-milligram tablet a day, while men may take up to four of the same dosage.
Men are sometimes prescribed mesterolone as an infertility treatment, but it should never be given to women who are or may become pregnant. Any hormone therapy can cause significant harm to a developing fetus, including causing birth defects.
Mesterolone has the following structural formula:
• Molecular formula of mesterolone is C20H32O2
• Chemical IUPAC Name is (1S,5S,8R,9S,10R,13S,14S,17S)-17-hydroxy-1,10,13-trimethyl-1,2,4,5,6,7,8,9, 11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-3-one
• Molecular weight is 304.467 g/mol