Related Species and Principles.—Ephedra vulgaris. Japan. A plant of the order Gentianæ, from which Nagai of Tokio isolated the alkaloid ephedrine (C10H15NO). The latter body produces death in the lower animals by both cardiac and respiratory paralysis. It is a local mydriatic, producing, in 10 per cent solution, an incomplete dilatation of the pupil in from ¾ to 1 hour, the normal condition being regained in from 6 to 20 hours. The accommodation is scarcely affected. It is not likely to come into general use.
Library · King's American Dispensatory, vol. 1, 1898
ATROPINÆ SULPHAS. Related Species and Principles (Ephedra vulgaris)
Harvey Wickes Felter and John Uri Lloyd, p. 309. Transcribed from the page image on September 25, 2026, as printed.