Arsenic-based medicine, Wm. R. Warner & Co., about 1900 Arsenic
was widely used as a medicine in the 19th and 20th centuries.
The development of forensic toxicology coincided with the spread
of mass-produced and commercially distributed medicines and
poisons (sometimes the same thing), and an associated rise in
murders and suicides involving those substances. National Museum
of American History, Behring Center, Smithsonian Institution