This section is from the book "Materia Medica Pharmacy, Pharmacology And Therapeutics", by W. Hale White. Also available from Amazon: Materia Medica Pharmacy, Pharmacology And Therapeutics..
Apocynum. - Synonym. - Canadian Hemp. The root of Apocynum cannabinum Linne (nat. ord. Apocynaceae).
United States, on the border of thickets and in grassy places.
Long, cylindrical, somewhat branched, 5 to 10 mm. thick, gray or brownish-gray, longitudinally wrinkled and transversely fissured; brittle; fracture short, white; the bark rather thick; the wood porous, spongy, with delicate, medullary rays; inodorous; taste bitter, disagreeable.
Dose, 2 to 5 gr.; .12 to .30 gm.
Dose, 2 to 20 m.; .12 to 1.20 c.c.
Canadian hemp has been found to be beneficial in dropsy, because of its action which is not only diuretic, but as well resembling that of strophanthus and similar drugs, when used as an infusion (1 to 16), of which the dose is one to two fluid ounces; 30. to 60. c.c, twice or three times daily. This is a more valuable drug than its limited use would indicate. It frequently produces copious diuresis after other, and better known drugs, have failed. It is also, in larger doses, a hydragogue cathartic.