_Syrupus Rhamni Catharticae (Syr. Rham. Cathart.), Syrup of Rhamnus Cathartica, N.F._ (Syrup of Buckthorn Berries, Syrupus Spinae Cervinae).--Fluidextract of rhamnus cathartica (20%), oil of fennel and oil of cinnamon, in syrup. Absolute alcohol content about 8 per cent. DOSAGE: 8 Cc. or 2 fluidrachms (N.F.). =*Rheum (Rheum), Rhubarb, U.S.P.=--Rhizome and root. ACTION AND USES: Efficient and pleasant laxative, its action resembling cascara. It is, however, also somewhat astringent. Used especially in the form of aromatic tincture and aromatic syrup. The official preparations of rhubarb are needlessly numerous, those that are starred being quite sufficient. Many of the official mixtures and pills are unnecessarily complex. DOSAGE: 1 Gm. or 15 grains (U.S.P.). _*Extractum Rhei (Ext. Rhei), Extract of Rhubarb, U.S.P._ (Powdered Extract of Rhubarb).--One Gm. extract represents 2 Gm. rhubarb. DOSAGE: 0.25 Gm. or 4 grains (U.S.P.). _Fluidextractum Rhei (Fldext. Rhei), Fluidextract of Rhubarb, U.S.P._--Rhubarb (100%). Absolute alcohol content about 70 per cent. DOSAGE: 1 Cc. or 15 minims (U.S.P.). _Fluidglyceratum Rhei (Fldglycer. Rhei), Fluidglycerate of Rhubarb, N.F._--Rhubarb (100%) in water and glycerin. DOSAGE: 1 Cc. or 15 minims (N.F.). _Mistura Rhei Alkalina (Mist. Rhei Alk.), Alkaline Mixture of Rhubarb, N.F._ (Syrupus Rhei et Potassii Compositus, N.F. III, Neutralizing Cordial).--Fluidextract of rhubarb (1.6%), fluidextract of hydrastis (0.8%), and potassium carbonate (1.6%) with tincture of cinnamon, spirit of peppermint in syrup and diluted alcohol. Absolute alcohol content about 37 per cent. DOSAGE: 4 Cc. or 1 fluidrachm (N.F.). _Mistura Rhei Composita (Mist. Rhei Co.), Compound Mixture of Rhubarb, N.F._ (Mistura Rhei et Sodae, U.S.P. VIII, Mixture of Rhubarb and Soda).--Fluidextract of rhubarb (1.5%), fluidextract of ipecac (0.3%), sodium bicarbonate (3.5%), glycerin and spirit of peppermint in water. Absolute alcohol content about 4 per cent. DOSAGE: 4 Cc. or 1 fluidrachm. _Pilulae Rhei (Pil. Rhei), Pills of Rhubarb, N.F._--Each pill contains rhubarb (0.2 Gm. or 3 grains) with soap. DOSAGE: 1 pill (N.F.). _Pilulae Rhei Compositae (Pil. Rhei Co.), Compound Pills of Rhubarb, U.S.P._--Each pill contains rhubarb (0.13 Gm. or 2 grains) and aloes (0.1 Gm. or 1-1/2 grains) with myrrh and oil of peppermint. DOSAGE: 2 pills (U.S.P.). _Pulvis Rhei Compositus (Pulv. Rhei Co.), Compound Powder of Rhubarb, U.S.P._ (Gregory's Powder).--Rhubarb (25%), Jamaica ginger (10%) and magnesium oxide. DOSAGE: 2 Gm. or 30 grains (U.S.P.). _Pulvis Rhei et Magnesiae Anisatus (Pulv. Rhei et Magnes. Anis.), Anisated Powder of Rhubarb and Magnesia, N.F._ (Compound Anise Powder).--Rhubarb (35%), anethol and heavy magnesium oxide. USES: Mild cathartic. DOSAGE: For infants, 0.3 Gm. or 5 grains (N.F.).