In 1991 Brigitte Berendonk and Werner Franke, two opponents of the doping, published several theses which had been drafted former researchers in the GDR doping products which were at the Military Medical Academy Bad Saarow. Based on this work, in their book (translated from German as 'Doping Documents") they were able to reconstruct the practice of doping as it was organized by the State on many great athletes from the GDR, including Marita Koch and Heike Drechsler , who have denied the allegations. Brigitte Berendonk survived a 1993 lawsuit where Drechsler accused her of lying. The lawsuit essentially validates the book. [ improper synthesis? ]  
Dienogest was synthesized in 1979 in Jena , Germany under the leadership of Prof. Kurt Ponsold, was initially referred to as STS-557 .   It was found that its potency was 10 times that of levonorgestrel .  The first product on the market to contain dienogest was a combined oral contraceptive pill (with ethinylestradiol), Valette, introduced in 1995 and made by Jenapharm .  In 2007, dienogest was introduced as Dinagest in Japan for the treatment of endometriosis, and it was subsequently marketed for this indication as Visanne in Europe and Australia in December 2009 and April 2010, respectively.  Qlaira was introduced in Europe in 2009 and Natazia was introduced in the United States in 2010. 
For the athlete looking for an edge a dosing of 20mg per day will generally prove to be the minimal with 40mg per day being far more optimal. While 40mg per day will provide a nice boost in-terms of overall athletic performance if you’re really looking to transform your physique you will probably need a far greater dose. As this steroid will not provide massive amounts of lean tissue most bodybuilders will not mess with it and if they do they will necessarily take massive amounts making it a poor choice for off-season periods of growth. The dieting bodybuilder however might find a more suitable use for the steroid but again there are more efficient choices for this individual. In either case, as it is an anabolic steroid that is hepatic total use should not extend past the 8 week mark but many will find 6 weeks to be just about perfect.
For the female Turinabol user 5mg per day would be the starting point with 10mg per day being the absolute max . Most females will need to start at 5mg per day to see how they react but understand if you approach the 10mg mark you will increase the probability of virilization. While 5mg per day may not sound like much it is important to remember on a per milligram basis Turinabol appears to be much stronger in women than it is in men meaning lower doses will have a far reaching and pronounced affect.