The Greek physician Pedanius Dioscorides (AD 40-90) reported using cannabis as a treatment for "sexual longing" and earaches(Booth, 2005). In the following millennia the use of medical cannabis continued to expand worldwide. By the 1840s, physicians in the United States considered cannabis a standard therapy for several conditions including headaches and insomnia. “Extractum Cannabis” was ultimately added to the official United States pharmacopeia in 1850 as a potential treatment for “neuralgia, tetanus, typhus, cholera, rabies, dysentery, alcoholism, opiate addiction, anthrax, leprosy, incontinence, gout, convulsive disorders, tonsillitis, insanity, excessive menstrual bleeding, and uterine bleeding” (Convention, 1850).