Action and Uses: Superfluous; see Quininae Hydrochloridum. The quantity of salicylate in a dose is usually too small to be effective.

Dosage: Tonic, 0.1 Gm. or 1-1/2 grains (U.S.P.); antimalarial, at least 1 Gm. or 15 grains daily (U.S.P.).

*Quininae Sulphas (Quin. Sulph.), Quinine Sulphate, U.S.P.

White, odorless, very bitter, efflorescent crystals. Slightly soluble in water (1:725) and in alcohol (1:107).

Action and Uses: The most commonly used quinine salt but inferior to the hydrochloride, the dihydrochloride and quinine and urea hydrochloride where a soluble salt is desired, and to the alkaloid or the tannate where an insoluble one is needed.

Dosage: Tonic, 0.1 Gm. or 1-1/2 grains (U.S.P.); antimalarial, at least 1 Gm. or 15 grains daily (U.S.P.).

Elixir Cinchonae Alkaloidorum (Elix. Cinchon. Alk.), Elixir of Cinchona Alkaloids, N.F. (Elixir Cinchonae, N.F. III, Elixir Calisaya, Alkaloidal).—Quinine sulphate (0.2%), cinchonidine sulphate (0.1%), cinchonine sulphate (0.1%), compound tincture of cudbear and aromatic elixir. Absolute alcohol content about 21 per cent.

Uses: Imitation of cinchona, minus the tannin. No advantage over quinine.

Dosage: 8 Cc. or 2 fluidrachms (N.F.).