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Steroid Profiles

THG (Tetrahydrogestrinone)

Chemical Composition
Manufacturer: Unknown
Effective Dose (Men): 2-5 mg/day
Effective Dose (Women): Not Recommended
Half-Life: Unknown
Detection Time: Unknown
Anabolic/Androgenic Ratio: High/Moderate


THG, a.k.a. tetrahydrogestrinone, is essentially an oral version of the anabolic steroid nandrolone. This particular drug contains three significant structural modifications. The addition of the c-17 alpha methyl group provides effective transport through the liver, while double bonds at carbons 9 and 11 were added to greatly increase its relative steroid activity. Lastly, and this may or may not have been intentional, it possesses an 18-homo group which promotes very strong progestational activity.


The resulting combination equates to a highly anabolic, moderately androgenic, non-estrogenic steroid with a very high progesterone conversion rate.

Steroid Form

THG is what is typically considered a Designer Steroid - one that was never made commercially available as a prescription medication, but was originally designed to go undetected during drug testing by elite athletes. THG is still being produced by underground labs, and typically comes in 1 mg of steroid per tablet or capsule.

Indications/Purpose & Side Effects

For the Indications/Purpose & Side Effects of THG see the Deca-Durabolin profile.


Additional Information

A potent stand-alone or stackable cycle ingredient, THG is well suited for both bulking and cutting cycles. It is best cycled in a testosterone base with practically any non-nandrolone compounds such Primobolan, Oxandrolone, Trenbolone, Halotestin, Winstrol, Oral Turinabol and Dianabol.


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