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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 still quite often used because of its affordability and effectiveness for bulking cycles.
CDMT was the key steroid administered to approximately ten thousand East German athletes as part of a secret doping program, known as State Plan Topic 14.25, often without them knowing the nature of the "vitamins" they were forced to take.
Anabolic steroids influence cellular differentiation while favoring the development of muscle cells over fat-storage cells. [138] Research in this field has shown that structural modifications in anabolic steroids are critical in determining their binding affinity to ARs and their resulting anabolic and androgenic activities. [82]
The absorption rate constant K a is a value used in pharmacokinetics to describe the rate at which a drug enters into the system. It is expressed in units of time −1. [1] The K a is related to the absorption half-life (t 1/2a) per the following equation: K a = ln(2) / t 1/2a. [1] K a values can typically only be found in research articles. [2]
The plateau principle is a mathematical model or scientific law originally developed to explain the time course of drug action (pharmacokinetics). [1] The principle has wide applicability in pharmacology, physiology, nutrition, biochemistry, and system dynamics.
This is a common structure shared by all steroids. [41] The oxygen atom in the lactone bridge replaces a carbon atom at position 2 of the steroid nucleus, classifying oxandrolone as an 2-oxa-steroid. There is a hydroxyl group (-OH) attached at stereo-direction β to carbon 17, which is a characteristic of 17β-hydroxy-steroids. [42]
Parenteral durations of androgens/anabolic steroids Medication Form Major brand names Duration Testosterone: Aqueous suspension: Andronaq, Sterotate, Virosterone: 2–3 days Testosterone propionate: Oil solution: Androteston, Perandren, Testoviron: 3–4 days Testosterone phenylpropionate: Oil solution: Testolent: 8 days Testosterone ...
Chlorodehydromethylandrostenediol (CDMA), also known as 4-chloro-17α-methylandrost-1,4-diene-3β,17β-diol, is a synthetic, orally active anabolic-androgenic steroid ...