1899 Merck Manual lists Cannabis Indica as Medicine 62 Times

Patients for Medical Cannabis

Merck’s 1899 Manual of the Materia Medica by Merck & Co.

The following is an excerpt from GreenMedInfo

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Materia Medica is a Latin term for the extant body of collected knowledge about the therapeutic properties of any substance used for healing (i.e., medicines).

Perhaps what is the most striking thing about the first 1899 edition of the Merck Manual is that many of the remedies listed are entirely natural. It would not be until 1906 that Congress, with the strong support of President Theodore Roosevelt, would pass the Pure Food and Drug Act, which would usher in the era of pharmaceutical medicine, largely consisting of patented, synthetically produced medications. In 1899, the standard of care included toxic compounds like arsenic and mercury, as well as completely natural ones derived from common plants and foods, but few if any patented drugs.

The Pharmaceutical Industry Has Always Depended on Natural Medicine


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