Light, white, odorless, very bitter silky needles. Soluble in water (1:40), and very soluble in alcohol (1:0.9). ACTION AND USES: Superfluous; see =Quininae Hydrochloridum=. 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 Hydrochloridum (Quin. Hydrochl.), Quinine Hydrochloride, U.S.P.= (Quinine Chloride). White, odorless, very bitter, silky needles. Soluble in water (1:18) and very soluble in alcohol (1:0.8). ACTION AND USES: Has the action of other quinine salts; frequently preferred to the sulphate, because neutral and more soluble. 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.). _Syrupus Phosphatum cum Quinina et Strychnina (Syr. Phosphat. c. Quin. et Strych.), Syrup of Phosphates with Quinine and Strychnine, N.F._ (Syrupus Hydrochlorophosphatum, N.F. III, Compound Syrup of Hydrochlorophosphates).--Quinine hydrochloride (0.44%), strychnine nitrate (0.014%), compound solution of phosphates (50%) in glycerin and syrup. DOSAGE: 4 Cc. or 1 fluidrachm (N.F.) =Quininae Hypophosphis (Quin. Hypophos.), Quinine Hypophosphite, N.F.= Fine, white, odorless crystals, with a very bitter taste. ACTION AND USES: Superfluous quinine salt. DOSAGE: Tonic, 0.1 Gm. or 1-1/2 grains (N.F.); antimalarial, 1 Gm. or 15 grains daily (N.F.) =Quininae Salicylas (Quin. Salicyl.), Quinine Salicylate, U.S.P.= Colorless (often becoming pinkish), odorless, bitter needles. Soluble in alcohol (1:14) and in glycerin (1:13). Only slightly soluble in water. 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.).