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Chlordehydromethyltestosterone is a relatively mild orally applicable 17-alpha-alkalized steroid with an anabolic to androgenic ratio of 53: 6

Chlordehydromethyltestosterone was developed in the 1960s. The prescription drug was at that time as pink tablets with in each case one mg active substance Chlordehydromethyltestosteron. There was also a variant with 5 mg of active substance chlordehydromethyltestosterone. These tablets have been known among other things under the names “blue flashes”, “Blueman” and “blue beans” in the sports scene.

Since the human body can decompose chlordehydromethyltestosterone very quickly, and it can be detected only for a very short time, it rapidly gained a great popularity in international sports doping. Especially the sports functionaries of the GDR had a great interest in Chlordehydromethyltestosteron as their athletes could use it and stay undetected at dopingtests. Due to the great success of the doped GDR athletes in the Olympic Games 1968 a secret working group was formed in the GDR, which concerned about the doping of the athletes. Many athletes in the former GDR did not know they were doped.
For women in bodybuilding, chlordehydromethyltestosterone products are very popular as this steroid can cause good muscle growth with relatively minor side effects.

Although there are much more effective steroids than chlorohydromethyltestosterone, chlordehydromethyltestosterone also has less androgenic side effects than stronger AASs.

The 4-chloro modification prevents a reaction of the 5-alpha reductase enzyme. Thus, by the use of oral chlorohydromethyltestosterone, an estrogen excess should actually be excluded, but nevertheless isolated consumers report of a low gynecomastia.

In bodybuiliding, chlordehydromethyltestosterone is used to build quality muscles. Because the build-up effect is not as drastic as with other steroids, many bodybuilders report the increase in a “harder” muscle mass than other steroids.

Side effects:

Nasal bleeding, acne, nasal bleeding, headache, gastrointestinal complaints, reduced self-hormone production, gynecomastia, hypertension, increased aggressiveness, worsened blood clotting.
In women in addition: infertility, menstrual disorders.
In men in addition: potency disorders, erectile dysfunction and prostate diseases.
In children: growth disorders

Doping information:

[In Progress]

Application / dosage:

The duration of a treatment should be limited to 6 – 8 weeks, as the burden on the liver would exceed the benefit / side-load factor.
Current doses from bodybuilding circles are 30 – 100 mg per day for men, 10 – 20 mg per day for women. Due to its low half-life, the dosage is distributed to 2 receipts per day.
The dose recommendation of Jenapharm at that time suggested a dosage of 0.2 mg per kg of body weight.
In the bodybuilding scene chlordehydromethyltestosterone is also often used to support a diet.
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 using the idea of using steroids or similar, ask a doctor or pharmacist.

Black market price / availability:

Doping agents with chlordehydromethyltestosterone active are moderately available on the black market. Most products come from Chinese U-Labs. The amount of active substance per tablet is now mostly 25mg.
A tablet costs about 0.75 – 1.25 euros on the black market.


No counterfeits of chlordehydromethyltestosterone products are known.


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Trade name / Manufacturer:

Oral-Turinabol (until 1994) / Jenapharm (belongs to Bayer today)
Oral Turinabol / Generic Supplements, Netherlands (U-Lab)
Oral Turanabol / International Pharmaceuticals (U-Lab)
Oral Turinabolan / Moonlight Pharmaceutics, Switzerland (U-Lab)
Turanabol Tablets / British Dragon, Thailand (U-Lab)

Chemical information:

Molecular Formula: C20H27ClO2
Molecular weight: 334.8854 g / mol
Monoisotopic mass: 334.169952 Da
Half-life: 16 hours

(8R, 9S, 10R, 13S, 14S, 17S) -4-chloro-17-hydroxy-10,13,17-trimethyl-7,8,9,11,12,14,15,16-octahydro-6H- Cyclopenta [a] phenanthren-3-one
(17β) -4-Chloro-17-hydroxy-17-methylandrosta-1,4-diene-3-one