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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.
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]
AAS have been used by men and women in many different kinds of professional sports to attain a competitive edge or to assist in recovery from injury. These sports include bodybuilding, weightlifting, shot put and other track and field, cycling, baseball, wrestling, mixed martial arts, boxing, football, and cricket. Such use is prohibited by the ...
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.
Metenolone, or methenolone, is an androgen and anabolic steroid (AAS) which is used in the form of esters such as metenolone acetate (brand name Primobolan, Nibal) and metenolone enanthate (brand name Primobolan Depot, Nibal Injection).
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.
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]
Metandienone, also known as methandienone or methandrostenolone and sold under the brand name Dianabol (D-Bol) among others, is an androgen and anabolic steroid (AAS) medication which is mostly no longer prescribed.