 With the research assistance of Ciba Pharmaceuticals, Ziegler began to look for synthetic substance that would mimic testosterone.Working at CIBA allowed Ziegler access to books and records from Germany where experiments with testosterone had been carried out by the Nazis, and which had been confiscated by the United States after the war.Ziegler sought a drug without after-effects and hit on an anabolic steroid, methandrostenolone (Dianabol, DBOL), made in the U.S. in 1958 by Ciba.