On this day in 1899, the Imperial Patent Office in Berlin registers Aspirin, the brand name for acetylsalicylic acid, on behalf of the German pharmaceutical company Friedrich Bayer & Co.
Now the most common drug in household medicine cabinets, acetylsalicylic acid was originally made from a chemical found in the bark of willow trees. In its primitive form, the active ingredient, salicin, was used for centuries in folk medicine, beginning in ancient Greece when Hippocrates used it to relieve pain and fever. Known to doctors since the mid-19thcentury, it was used sparingly due to its unpleasant taste and tendency to damage the stomach.
In 1897, Bayer employee Felix Hoffman found a way to create a stable form of the drug that was easier and more pleasant to take. (Some evidence shows that Hoffman's work was really done by a Jewish chemist, Arthur Eichengrun, whose contributions were covered up during the Nazi era.) After obtaining the patent rights, Bayer began distributing aspirin in powder form to physicians to give to their patients one gram at a time. The brand name came from "a" for acetyl, "spir" from the spirea plant (a source of salicin) and the suffix "in," commonly used for medications. It quickly became the number-one drug worldwide.