Epitome of the Pharmacopeia of the United States and the National Formulary Part 71

ACTION AND USES: Used in the preparation of ointments and plasters. Rubefacient.

_Ceratum Resinae (Cerat. Res.), Rosin Cerate, U.S.P._ (Basilicon Ointment).--Rosin, yellow wax and lard.

_Ceratum Resinae Compositum (Cerat. Resin. Co.), Compound Rosin Cerate, N.F._ (Deshler's Salve).--Rosin, yellow wax, prepared suet, turpentine and linseed oil.

_Emplastrum Elastic.u.m (Emp. Elast.), Rubber Plaster, U.S.P._ (Rubber Adhesive Plaster).--A mixture of rubber, resins, and waxes, with a filler of an absorbent powder.

_Emplastrum Resinae (Emp. Res.), Rosin Plaster, U.S.P._ (Rosin Adhesive Plaster, Adhesive Plaster).--Rosin, lead plaster and yellow wax.

=RESINAE, RESINS.=--Resins are the residues obtained by distilling the volatile oil from oleoresins or the precipitates obtained from solutions of resins in alcohol by the addition of water. For the official resins see under the names of the princ.i.p.al const.i.tuents.

=*Resorcinol (Resorcin.), Resorcinol, U.S.P.= (Resorcin).--Metadihydroxybenzene.

Colorless or nearly colorless crystals or powder with a faint, peculiar odor and a taste at first sweetish, afterward bitter. Very soluble in water (1:0.9) and in alcohol (1:0.9).

ACTION AND USES: Irritant, antiseptic; used internally in gastric fermentation; externally in skin diseases.

DOSAGE: 0.125 Gm. or 2 grains (U.S.P.).

_Pasta Resorcinolis Fortis (Past. Resorcin. Fort.), Strong Resorcinol Paste, N.F._ (La.s.sar's Stronger Resorcinol Paste).--Resorcinol (20%), zinc oxide (20%), starch and light liquid petrolatum.

_Pasta Resorcinolis Mitis (Past. Resorcin. Mit.), Mild Resorcinol Paste, N.F._ (La.s.sar's Mild Resorcinol Paste).--Resorcinol (10%), zinc oxide (25%), starch and liquid petrolatum.

_Unguentum Resorcinolis Compositus (Ung. Resorcin. Co.), Compound Resorcinol Ointment, N.F._--Resorcinol, zinc oxide, bis.m.u.th subnitrate and rectified oil of birch tar (each 6%), in yellow wax, petrolatum, anhydrous wool fat and glycerin.

USES: Complex antiseptic ointment.

=Rhamnus Cathartica (Rhamn. Cath.), Rhamnus Cathartica, N.F.= (Buckthorn Berries, Baccae Spinae Cervinae).--Ripe fruit.

ACTION AND USES: Superfluous hydragogue cathartic.

DOSAGE: 1 Gm. or 15 grains (N.F.).

_Fluidextractum Rhamni Catharticae (Fldext. Rham. Cathart.), Fluidextract of Rhamnus Cathartica, N.F._--Rhamnus cathartica (100%).

Absolute alcohol content about 40 per cent.

DOSAGE: 1 Cc. or 15 minims (N.F.).

_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 Pota.s.sii Compositus, N.F. III, Neutralizing Cordial).--Fluidextract of rhubarb (1.6%), fluidextract of hydrastis (0.8%), and pota.s.sium 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.).

_Syrupus Rhei (Syr. Rhei), Syrup of Rhubarb, U.S.P._--Fluidextract of rhubarb (10%), spirit of cinnamon and pota.s.sium carbonate in water and syrup.

DOSAGE: 10 Cc. or 2-1/2 fluidrachms (U.S.P.).

_*Syrupus Rhei Aromaticus (Syr. Rhei Arom.), Aromatic Syrup of Rhubarb, U.S.P._ (Spiced Syrup of Rhubarb).--Aromatic tincture of rhubarb (15%) and pota.s.sium carbonate in syrup.