=PILULAE, PILLS.=--Pills are dosage forms of medicinal substances intended for administration by the mouth. For the official pills see under the names of the principal ingredients. For Pilulae ad Prandium see under =Aloe=; for Pilulae Antidyspepticae, under =Strychnina=; for Pilulae Antimonii Compositae, under =Antimonium Sulphuratum=; for Pilulae Antiperiodicae and Pilulae Antiperiodicae sine Aloe, under =Quininae Sulphas=; for Pilulae Catharticae Compositae, Pilulae Catharticae Vegetabiles and Pilulae Laxativae Post Partum, under =Colocynthis=; for Pilulae Ferri, Quininae, Aloes et Nucis Vomicae, under =Ferri Sulphas=; for Pilulae Ferri, Quininae Strychninae et Arseni Fortiores and Pilulae Ferri, Quininae, Strychninae et Arseni Mites, under =Ferri Reductum=; for Pilulae Laxativae Compositae, under =Aloinum=. =Pimenta (Piment.), Pimenta, N.F.= (Pimento, Allspice).--Nearly ripe fruit. ACTION AND USES: Aromatic; stomachic; has no advantage over cardamom. DOSAGE: 1 Gm. or 15 grains (N.F.). =Pimpinella (Pimpinell.), Pimpinella, N.F.= (Pimpernel Root).--Rhizome and roots. ACTION AND USES: Formerly used as a diuretic, diaphoretic and stomachic. Now obsolete; no definite indications for its use. DOSAGE: 1 Gm. or 15 grains. _Tinctura Pimpinellae (Tr. Pimpinel.), Tincture of Pimpinella, N.F._--Pimpinella (20%) in alcohol and water. Absolute alcohol content about 60 per cent. DOSAGE: 4 Cc. or 1 fluidrachm (N.F.). =Pinus Alba (Pinus Alb.), White Pine Bark, N.F.=--Inner bark. ACTION AND USES: Used as "expectorant" in proprietary cough syrups. Of doubtful value. DOSAGE: 2 Gm. or 30 grains. _Syrupus Pini Strobi Compositus (Syr. Pin. Strob. Co.), Compound Syrup of White Pine, N.F._--White pine bark and wild cherry (each 8.5%), aralia (1%), balsam poplar buds (1%), sanguinaria (0.8%), sassafras (0.7%) and chloroform (0.6%) in glycerin, alcohol and syrup, colored with cudbear and flavored with oil of sassafras. Absolute alcohol content about 12 per cent. DOSAGE: 4 Cc. or 1 fluidrachm (N.F.). _Syrupus Pini Strobi Compositus cum Morphina._--See under =Morphinae Sulphas=. =Piper (Piper), Pepper, U.S.P.= (Black Pepper). ACTION AND USES: Sometimes used as carminative, generally in the form of the oleoresin, which is highly irritant. DOSAGE: 0.5 Gm. or 8 grains (U.S.P.). _Oleoresina Piperis (Oleores. Piper.), Oleoresin of Pepper, U.S.P._ DOSAGE: 0.03 Gm. or 1/2 grain (U.S.P.). =*Pix Liquida (Pix Liq.), Tar, U.S.P.= (Pine Tar).--Obtained by the destructive distillation of pine wood. A semiliquid viscid blackish-brown substance, with an empyreumatic odor and taste. Slightly soluble in water; miscible with alcohol. ACTION AND USES: Externally, as antiseptic and stimulant in chronic diseases of the skin associated with thickening and scaling. Internally, as irritant expectorant in subacute bronchitis.