In each major category of intoxicant used by our species, there appear to be one or two drug plants that researchers have noted, are more controllable, hence safer, than all the other plants or synthetics in that category. Coca leaf stands out among all the stimulants, licit and illicit, as the easiest to control and the one least likely to produce toxicity or dependency.
“I have also employed it in cases, happily rare in our army, of chronic alcoholism resulting from the abuse of brandy, absinthe or strong liquors. The produced all the excitement sought by drinkers, but had at the same time a sedative influence on their nervous systems. I have frequently seen hardened drinkers renounce their fatal habit and return to a healthy condition." "I have also used to save smokers of exaggerated habits, from nicotinism. A few glasses of taken in small doses, either pure or mixed with water, acted as a substitute for pipes and cigars, because the smokers found in it the cerebral excitement which they sought in tobacco, wholly preserving their intellectual faculties."
Coca to Combat Opiate, Alcohol and Tobacco Addiction
1906-1914+ Agrilcultural Market Protection Racket
Note Luis Martin's agonizing death: http://en.wikipedia.org/wiki/Luis_Mart%C3%ADn
Suffering and death Even at the beginning of his term Martín's physical health had been poor and it grew steadily worse with the years. In 1905, a tumor forced the amputation of his right arm. Pope Pius X granted him permission to celebrate mass despite his disability, a privilege for which he was most grateful. The cancer, however, soon invaded his lungs and he died in Rome, on 18 April 1906.