Overview
Turinabol is an oral anabolic-androgenic steroid. 4-chloro-substituted derivative of methandrostenolone. As a 17-alpha-alkylated compound, it passes through the liver intact, enabling oral bioavailability.
With a half-life of ~16 hours, Turinabol requires daily administration in most observed protocols. Taken orally, it has a bioavailability of approximately 95% via its primary route.
17-alpha-alkylated. Half-life approximately 16 hours. Does not undergo aromatization. One-compartment model.
Mechanism of Action
Turinabol's pharmacological activity involves the following key pathways:
Androgen Receptor Binding
Turinabol binds to androgen receptors to initiate anabolic signaling cascades in muscle tissue and other androgen-responsive cells.
17-Alpha Alkylation
The 17-alpha-alkyl group prevents first-pass hepatic degradation, enabling oral bioavailability. This structural modification is what makes oral administration viable.
Non-Aromatizing
Turinabol does not undergo direct aromatization to estrogen, a distinguishing property among oral anabolics.
Dosing Protocols
The following protocols represent commonly observed dosing patterns. These are observational summaries, not recommendations.
Dose
10 mg/day
Route
Oral
Frequency
Once daily
Duration
4-8 weeks
Dose
60 mg/day
Route
Oral
Frequency
Once daily
Duration
4-8 weeks
Frequently Asked Questions
What is Turinabol and how does it work?
Turinabol (Chlorodehydromethyltestosterone, also called Oral Tbol) is a modified form of Dianabol with a 4-chloro substitution that prevents aromatization to estrogen. It has an anabolic-to-androgenic ratio of approximately 54:6, making it considerably more anabolic relative to its androgenic activity compared to testosterone. This profile is associated with lean muscle gains and strength improvements without significant water retention or estrogenic effects.
What is the half-life of Turinabol and how should it be dosed?
Turinabol has a half-life of approximately 16 hours, reaching steady-state concentrations within about 3 days of consistent dosing. While the full daily dose can be taken at once in the morning, split dosing – two doses approximately 8–12 hours apart – is commonly observed to maintain more stable blood levels throughout the day.
What kind of gains does Turinabol produce?
Turinabol is characterized by slow, steady, high-quality lean muscle gains rather than rapid mass accumulation. Users commonly report gaining 4–8 lbs (2–4 kg) of lean tissue over a typical 6–8 week cycle. Because it does not aromatize, virtually all weight gained is lean tissue rather than water, making gains easier to retain post-cycle compared to more estrogenic compounds.
Is Turinabol safe for the liver?
Turinabol is a C17-alpha alkylated oral steroid, which means it does place measurable stress on hepatic function during use. However, it is generally considered to be milder on the liver compared to other oral AAS like Dianabol or Anadrol. Cycles are typically limited to 6–8 weeks to manage cumulative liver strain, and liver support supplementation during use is a commonly observed practice.
How does Turinabol compare to Dianabol?
Both are structurally related, but the 4-chloro modification in Turinabol prevents aromatization, eliminating estrogenic effects like water retention and gynecomastia that are commonly associated with Dianabol. Turinabol produces slower, leaner gains compared to Dianabol's more rapid but water-heavy mass accumulation. Turinabol is generally considered the more conservative choice for users prioritizing lean tissue quality over raw scale weight.
Can Turinabol be run as a standalone cycle?
While Turinabol-only cycles are occasionally reported, particularly among newer users, it suppresses natural testosterone production to a significant degree. Most experienced protocols include a testosterone base to maintain normal physiological function. PCT (post-cycle therapy) is considered standard practice after discontinuation to support the recovery of natural hormone production.