This section is from the book "A Practitioner's Handbook Of Materia Medica And Therapeutics", by Thos. S. Blair. Also available from Amazon: A Practitioner's handbook of Materia Medica and Therapeutics.
Coca, Erythroxylon Coca. The official coca leaves must yield 1/2 of 1% of alkaloids, and as the average dose is 30 gr. of the leaves, that is equivalent to 1-7 gr. of alkaloids per dose. The official "Vinum Cocre" is 60% coca.
This is stated to show the fallacy of the contention that the use of coca does not involve the use of its alkaloids. Coca is a nerve stimulant, muscle tonic, and invigorant, undoubtedly of use, but so much abused in the use as to make it questionable how much it should be employed by physicians. The seductive proprietary preparations of coca are an abomination, and do much harm.