This Post is also available in: German

Bolasterone is methyltestosterone with an additional methyl group. Bolasterone is 5.75 times more anabolic, and 3 times more potent androgenic than any other anabolic steroid, which is used orally. It is an oral steroid which was first developed in 1959 by Upjohn – an American pharmaceutical company. In the sixties it became known under the brand name Myagen. Nowadays, however, Bolasteron exists more on paper than it would be available on the market / black market.
Until the 1980s, it was a very widespread steroid, but production was stopped.

However, it has good chances of a comeback if a laboratory succeeds in continuing the production.

Side effects:

It is to be treated with a very high steroid-specific side effect, since Boldasteron is an extremely strong oral anabolic. Since it is an oral steroid, the burden of the liver is very high.

Gynecomastia (breast gland growth “bitchtits”), water storage, hair loss, blood pressure steroid acne, increased blood pressure, increased liver values, liver damage

Application / dosage:

The average dosage when it was used was around: 50-100 mg.

The dosage information given here is not intended as a dosage recommendation or medical advice. These are statements by bodybuilders who have used or used these active ingredients. The dosages should never be regarded as generally valid. If you are thinking of using steroids or similar substances, ask a doctor or pharmacist.

Black market prices / availability:

Bolasteron is not available on the black market. There are no prices known, as of 09-2008


There was a flood of counterfeit bobasteron ampoules in 1986, which flooded the then GDR of Europe. The forgeries were steroid mixtures. The names of the counterfeit products include: UCLA Bolasterone, New Bolasterone, Bolasterone Depot,


Bolasteron, myagen, dimethyltestosteron, dimethyltestosterone

Trade name / manufacturer:

Myagen / Upjohn (until 1995)

Chemical information:

Molecular formula: C21H32O2
Molecular weight: 316,478 g / mol
Active working time: approx. 6 hours
Anabol / Androgen Ratio: 575: 300

17β-hydroxy-7a, 17a-dimethylandrost-4-en-3-one