(Not official.) The Sulphate of the alkaloid Duboisine obtained from the leaves of Duboisia myoporoides, nat. ord. Solanaceae. Duboisine is probably identical with Hyoscyamine (see p. 384).

Action And Therapeutics Of Duboisine

The action of duboisine is like that of atropine, and ophthalmic discs containing 1/5000 of a grain .000013 gm. are used to dilate the pupil.