Chlorodehydromethyltestosterone (Turinabol) for Lean Performance — Anabolic Steroids
East German-developed oral AAS combining Dianabol structure with clostebol modification for dry, lean gains.
Overview
Oral Turinabol (4-chlorodehydromethyltestosterone) was developed in 1961 by Jenapharm in East Germany and became infamous as the centerpiece of the East German state-sponsored doping program (1968-1989), where it was administered to thousands of athletes without their knowledge. Structurally, it combines the methandrostenolone (Dianabol) backbone with a 4-chloro modification from clostebol, which prevents aromatization. This produces a 'dry Dianabol' effect: moderate lean mass and strength gains without water retention or estrogenic effects. Turinabol has a lower anabolic-to-androgenic ratio than Dianabol and produces slower, more quality gains. It is 17-alpha-alkylated with moderate hepatotoxicity. It was voluntarily discontinued by Jenapharm in 1994 after the doping scandal revelations.
Indications
- No current medical indications
- Lean mass accrual without water retention (non-medical)
- Strength and athletic performance enhancement
- Moderate body composition optimization with favorable cosmetic appearance
- Historical: administered to East German Olympic athletes (1968-1989)
Mechanism of Action
Desire for quality lean mass and strength gains without water retention or estrogenic side effects
Dosing
| Compound | Dose | Frequency | Notes |
|---|---|---|---|
| Chlorodehydromethyltestosterone (Turinabol) | 20-40 mg | Split 2-3 times daily | Moderate oral dosing for lean gains; split doses due to short half-life |
| Chlorodehydromethyltestosterone (Turinabol) | 40-60 mg | Split 2-3 times daily | Higher dosing for experienced users; increased hepatotoxicity |
Evidence Grade
GRADE D
Safety & Contraindications
- 17-alpha-alkylated - moderate hepatotoxicity
- Schedule III controlled substance
- Does NOT aromatize due to 4-chloro modification
- Moderate HPTA suppression - PCT required
- Can reduce SHBG significantly, increasing free testosterone
- Androgenic side effects possible but milder than Dianabol
- Monitor liver function throughout use
- Negative lipid profile effects (HDL suppression)
- No pharmaceutical production since 1994 - all supply from underground labs
- Long metabolite detection time: up to 12-18 months with long-term metabolite testing
- Virilization risk in females at any dose