In the United States around 1787—the year that Thomas Jefferson took a three-month sabbatical to tour the vineyards of France and Italy—the average drinking American consumed the equivalent of an estimated six gallons of pure alcohol per year. The figure today is 2.2.

Isolated from opium by the German chemist F. W. A. Sertürner around 1804, morphine (named after Morpheus, the Greek god of sleep and dreams) was used to treat opium addicts. Invented by Bayer Pharmaceuticals in 1898, heroin (derived from the Greek word for hero) was used to treat morphine addicts.