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Mesterolone, sold under the brand name Proviron among others, is an androgen and anabolic steroid (AAS) medication which is used mainly in the treatment of low testosterone levels. [ 2 ] [ 3 ] It has also been used to treat male infertility , although this use is controversial.
Studies in the United States have shown that AAS users tend to be mostly middle-class men with a median age of about 25 who are noncompetitive bodybuilders and non-athletes and use the drugs for cosmetic purposes. [54] "Among 12- to 17-year-old boys, use of steroids and similar drugs jumped 25 percent from 1999 to 2000, with 20 percent saying ...
Due to inactivation by 3α-hydroxysteroid dehydrogenase (3α-HSD) in skeletal muscle, mestanolone is described as a very poor anabolic agent, similarly to androstanolone and mesterolone. [4] As mestanolone is 5α-reduced , it cannot be aromatized and hence has no propensity for estrogenic side effects such as gynecomastia . [ 4 ]
Richard Eugene Piana (September 26, 1970 – August 25, 2017) was an American bodybuilder, businessman, and YouTuber.He won the National Physique Committee (NPC) Mr. Teen California title in 1989, NPC Mr. California in 1998, and NPC competitions in 2003 and 2009.
In 2014, Czech bodybuilder Petr Soukup received a lifetime ban after a positive test for clenbuterol along with methenolone, mesterolone, methamphetamine, oxandrolone, stanozolol, nandrolone, fluoxymesterone, CDMT ("Oral Turinabol"), and metandienone. [107]
This is a complete list of androgens/anabolic steroids (AAS) and formulations that are approved by the FDA Tooltip Food and Drug Administration and available in the United States.
Metribolone is an AAS, or an agonist of the AR, with both anabolic and androgenic activity. [2] It is one of the most potent AAS to have ever been synthesized, with 120 to 300 times the oral anabolic potency and 60 to 70 times the androgenic potency of the reference AAS methyltestosterone in castrated male rats, although the same level of potency has not been observed in studies in humans.
Metenolone acetate, or methenolone acetate, sold under the brand names Primobolan and Nibal, is an androgen and anabolic steroid (AAS) medication which is used mainly in the treatment of anemia due to bone marrow failure.