Eclectic Materia Medica is a materia medica written by the eclectic medicine doctor Harvey Wickes Felter (co-author with John Uri Lloyd of King's American Dispensatory). This was the last, articulate, but in the end, futile attempt to stem the tide of Standard Practice Medicine, the antithesis of the model of the rural primary care "vitalist" physician that was the basis for Eclectic medicine. The herbal portions of the Materia Medica can be found at the websites below, but the book also contained alkaloids, salts, chemicals, injected compounds and other products well-outside of the herbal realm.