Tinctura Quillajae (Tr. Quillaj.), Tincture of Quillaja, N.F.—Quillaja (20%) in alcohol and water. Absolute alcohol content about 30 per cent.
Quinidina (Quinid.), Quinidine, N.F.—An alkaloid isomeric with quinine.
White, odorless crystals or powder, with an intense and persistent bitter taste.
Action and Uses: At one time recommended as a cheap substitute for quinine. Inferior and obsolete.
Dosage: Tonic, 0.1 Gm. or 1-1/2 grains (N.F.); antimalarial, 1 Gm. or 15 grains (N.F.) daily.
Syrupus Quinidinae (Syr. Quinid.), Syrup of Quinidine, N.F. (Bitterless Syrup of Quinidine).—Quinidine (3.3%) and oil of orange in syrup.
Dosage: 4 Cc. or 1 fluidrachm (N.F.).
*Quinina (Quin.), Quinine, U.S.P.—Obtained from cinchona bark.
White, odorless, intensely bitter powder. Very slightly soluble in water (1:1560), and very soluble in alcohol (1:0.8).
Action and Uses: Bitter tonic, analgesic and antipyretic; specific against malaria. Contraindicated in ear diseases. Idiosyncrasies are common.