Epitome of the Pharmacopeia of the United States and the National Formulary Part 68

DOSAGE: 2 Cc. or 30 minims (N.F.).

_Infusum Pruni Virginianae (Inf. Prun. Virg.), Infusion of Wild Cherry, N.F._--Wild cherry (4%), in glycerin and water.

DOSAGE: 60 Cc. or 2 fluidounces (N.F.).

_*Syrupus Pruni Virginianae (Syr. Prun. Virg.), Syrup of Wild Cherry, U.S.P._--Wild cherry bark (15%), in glycerin and syrup.

DOSAGE: 4 Cc. or 1 fluidrachm (U.S.P.).

_Vinum Pruni Virginianae (Vin. Prun. Virg.), Wine of Wild Cherry, N.F._--Wild cherry (25%) in water, alcohol, sugar and sherry wine.

Absolute alcohol content about 23 per cent.

DOSAGE: 4 Cc. or 1 fluidrachm (N.F.).

_Vinum Pruni Virginianae Ferratum (Vin. Prun. Virg. Ferr.), Ferrated Wine of Wild Cherry, N.F._--Tincture of ferric citrochloride (8%) in wine of wild cherry. Absolute alcohol content about 21 per cent.

USES: Superfluous "tonic."

DOSAGE: 4 Cc. or 1 fluidrachm (N.F.).

=Pulsatilla (Pulsatil.), Pulsatilla, N.F.= (Pasque Flower, Meadow Anemone).--The plant.

ACTION AND USES: Has been recommended as an alterative, sedative and antispasmodic. Has been used in syphilis with undoubted harmful results because of its inefficiency.

Its use is fortunately decreasing.

DOSAGE: 0.3 Gm. or 5 grains (N.F.).

_Tinctura Pulsatillae (Tr. Pulsatil.), Tincture of Pulsatilla, N.F._--Pulsatilla (10%) in alcohol and water. Absolute alcohol content about 65 per cent.

DOSAGE: 2 Cc. or 30 minims (N.F.).

=PULVERES, POWDERS.=--The official powders are mixtures of several substances in powdered form. For the preparations now official see under the names of the princ.i.p.al const.i.tuents. For Pulvis Antimonialis, see under =Antimonii Oxidum=; for Pulvis Antisepticus, see under =Zinci Sulphas=; for Pulvis Aromaticus and Pulvis Cretae Aromaticus, under =Cinnamomum Saigonic.u.m=; for Pulvis Aromaticus Rubefaciens, under =Caryophyllus=; Pulvis Cretae Aromaticus et Opii, under =Opium=; for Pulvis Effervescens Compositus, under =Pota.s.sii et Sodii Tartras=; for Pulvis Glycyrrhizae Compositus, under =Senna=; for Pulvis Ipecacuanhae et Opii, under =Opium=, and for Pulvis Talci Compositus, under =Acidum Salicylic.u.m=.

=Pumex (Pumex), Pumice, N.F.=--Consists chiefly of complex silicates of volcanic origin.

ACTION AND USES: Used as an abrasive material, and in pharmacy as an absorbent.

=Pyrethrum (Pyreth.), Pyrethrum, U.S.P.= (Pellitory Root).

ACTION AND USES: Obsolete, irritant sialagogue and local irritant.

DOSAGE: 2 Gm. or 30 grains (U.S.P.).

_Tinctura Pyrethri (Tr. Pyreth.), Tincture of Pyrethrum, U.S.P._ (Tincture of Pellitory).--Pyrethrum (20%) in alcohol. Absolute alcohol content about 90 per cent.

USES: External.

=Pyrogallol (Pyrogall.), Pyrogallol, U.S.P.= (Pyrogallic Acid).--Trihydroxybenzene.

Light, white or nearly white, odorless, bitter laminae, fine needles or powder. Freely soluble in water (1:1.7) and in alcohol (1:1.3).

ACTION AND USES: Irritant antiseptic in chronic skin diseases. Internally highly toxic.

DOSAGE: 5 per cent. ointment.

=Pyroxylinum (Pyroxylin.), Pyroxylin, U.S.P.= (Soluble Gun Cotton).--Chiefly cellulose tetranitrate.

A yellowish-white matted ma.s.s of filaments, resembling raw cotton in appearance; very inflammable. Slowly but completely soluble in a mixture of three volumes of ether and one volume of alcohol. Also soluble in acetone and in glacial acetic acid. Practically insoluble in alcohol or water.

ACTION AND USES: Basis for collodions.

_*Collodium (Collod.), Collodion, U.S.P._--Pyroxylin (4%) in a mixture of ether and alcohol.

USES: Used to form a protective film and as a vehicle for external applications.

_*Collodium Flexile (Collod. Flex.), Flexible Collodion, U.S.P._--A mixture of collodion (95%) with camphor (2%) and castor oil (3%).

USES: More pliable than collodion and does not contract as much in drying.

=Qua.s.sia (Qua.s.s.), Qua.s.sia, U.S.P.= (Bitter Wood).

ACTION AND USES: Simple bitter stomachic (more disagreeable than gentian); an infusion is also used as enema in the treatment of pinworms.

DOSAGE: 0.5 Gm. or 8 grains (U.S.P.).

_Extractum Qua.s.siae (Ext. Quas.), Extract of Qua.s.sia, N.F._ (Powdered Extract of Qua.s.sia).--An aqueous extract diluted with starch, 1 Gm.

representing 10 Gm. of qua.s.sia.

DOSAGE: 0.06 Gm. or 1 grain (N.F.).

_Fluidextractum Qua.s.siae (Fldext. Qua.s.s.), Fluidextract of Qua.s.sia, N.F._--Qua.s.sia (100%). Absolute alcohol content about 25 per cent.

DOSAGE: 0.5 Cc. or 8 minims (N.F.).

_Tinctura Qua.s.siae (Tr. Quas.), Tincture of Qua.s.sia, U.S.P._--Qua.s.sia (20%) in alcohol and water. Absolute alcohol content about 30 per cent.

DOSAGE: 2 Cc. or 30 minims (U.S.P.).

=Quercus (Querc.), Quercus, N.F.= (White Oak Bark).