Turinabol

Turinabol (active ingredient: 4-chlorodehydromethyltestosterone, often abbreviated as Tbol) is an oral anabolic-androgenic steroid. It was originally developed in the 1960s by the East German pharmaceutical company Jenapharm as an advanced performance-enhancing drug for their Olympic athletes, designed to bypass early doping tests while maximizing muscle development.

Description

Turinabol is a structurally modified form of Dianabol (methandrostenolone) with an added chlorine atom at carbon 4 and a double bond between carbons 1 and 2. This unique chemical structure prevents it from aromatizing into estrogen while significantly reducing its androgenic potency compared to standard testosterone.

• Active Compound: 4-Chlorodehydromethyltestosterone

• Form: Oral tablets (typically 10 mg or 20 mg)

• Class: Oral Anabolic-Androgenic Steroid (Testosterone derivative)

• Mechanism: Binds to androgen receptors to promote rapid nitrogen retention, heavy protein synthesis, and enhanced red blood cell count, without converting to estrogenic compounds.

Medical Status & Uses

• Limited Western Approval: Turinabol was never widely approved for prescription use by the FDA in the United States, though it saw clinical application in Europe and East Germany for treating muscle-wasting conditions, recovery from major trauma, and severe nutritional deficiencies.

• Current Status: It has largely been phased out of modern clinical medicine, though underground and generic pharmaceutical labs manufacture it exclusively for athletic or bodybuilding contexts.