Bayer including pneumonia and tuberculosis. Bayer scientists were not the first to make heroin, but the company led the way in commercializing it. "Heroin" was a Bayer trademark until after World War I. In 1903 Bayer licensed the patent for the hypnotic drug diethylbarbituric acid from its inventors Emil Fischer and Joseph von Mering. It was marketed under the trade name Veronal as a sleep aid beginning in 1904. Systematic investigations of the effect of structural changes on potency and duration of action at Bayer led to the discovery of phenobarbital in 1911 and the discovery of its potent anti-epileptic activity
Bayer type of progestin hormone called drospirenone in combination with estrogen. Yaz is advertised as a treatment for premenstrual dysphoric disorder (PMDD) and moderate acne. Other key products include the cancer drug Nexavar, the multiple sclerosis drug betaferon/betaseron and the blood-clotting drug, Kogenate. In May 2014 it was announced that Bayer would buy Merck & Co's consumer health care unit for $14.2 billion. Bayer also controls Dihon Pharmaceutical Group Co., Ltd in China. The Pharmaceuticals Division focuses on prescription products, especially for women’s healthcare and cardiology, and also on specialty therapeutics in the areas of oncology, hematology and ophthalmology. The division