_*Tinctura Opii Deodorati (Tr. Opii Deod.), Tincture of Deodorized Opium, U.S.P._--Opium (10%, a purified or deodorized aqueous extract yielding about 1% anhydrous morphine), in alcohol and water. Absolute alcohol content about 19 per cent. DOSAGE: 0.5 Cc. or 8 minims (U.S.P.). _Tinctura Pectoralis (Tr. Pectoral.), Pectoral Tincture, N.F._ (Guttae Pectorales, Pectoral Drops, Bateman's Pectoral Drops).--Opium (0.4%), gambir (about 0.3%), camphor (0.4%), with oil of anise and caramel in diluted alcohol. Absolute alcohol content about 50 per cent. DOSAGE: 0.6 Cc. or 10 minims (N.F.). =Ovi Albumen Recens (Ovi Album.), Fresh Egg Albumen, N.F.= ACTION AND USES: Used in pharmacy. =Ovi Vitellum Recens (Ovi Vitel.), Fresh Egg Yolk, N.F.= ACTION AND USES: Emulsifying agent. _Glyceritum Vitelli (Glycer. Vitell.), Glycerite of Egg Yolk, N.F._ (Glyconin).--Fresh yolk of egg and glycerin. =Ovum Gallinaceum (Ovum Gallin.), Fresh Egg, N.F.= ACTION AND USES: Used in pharmaceutical preparations. =*Oxygenium (Oxygen.), Oxygen, U.S.P.= ACTION AND USES: Inhaled for relief of asphyxia, carbon monoxide poisoning, etc. =*Pancreatinum (Pancreat.), Pancreatin, U.S.P.=--Contains enzymes from the pancreas of the hog or beef, principally amylopsin, trypsin and steapsin. Converts not less than 25 per cent. of its own weight of starch into sugars. A cream-colored powder with a faint odor. ACTION AND USES: Chiefly for the predigestion of protein and starchy foods. Incompatible with acids and is therefore destroyed by the action of normal gastric juice. Occasionally used to assist gastric digestion in achlorhydria but the administration of dilute hydrochloric acid seems preferable. When the pancreatic juice is absent pancreatin may be given in salol-coated pills. DOSAGE: 0.5 Gm. or 8 grains (U.S.P.). _Liquor Pancreatini (Liq. Pancreat.), Solution of Pancreatin, N.F._ (Liquor Pancreaticus, N.F. III, Pancreatic Solution).--Pancreatin (1.75%), sodium bicarbonate (5%), with compound spirit of cardamom, sodium chloride and chloroform in alcohol, glycerin and water. Absolute alcohol content about 6 per cent. DOSAGE: 4 Cc. or 1 fluidrachm (N.F.). _Pulvis Pancreatini Compositus (Pulv. Pancreat. Co.), Compound Pancreatin Powder, N.F._ (Pulvis Pancreaticus Compositus, N.F. III, Peptonizing Powder).--Pancreatin (20%) and sodium bicarbonate. USES: Predigestion of milk. =Papaveris Fructus (Papav. Fruct.), Poppy Capsules, N.F.=--Fully grown unripe poppy heads. ACTION AND USES: Weak and unreliable opiate. DOSAGE: 1 Gm. or 15 grains (N.F.). _Syrupus Papaveris (Syr. Papaver.), Syrup of Poppy, N.F._--Poppy capsules (10%) in syrup. DOSAGE: 4 Cc. or 1 fluidrachm (N.F.). =Paracoto (Paracot.), Paracoto, N.F.=--Bark of an unidentified tree. ACTION AND USES: At one time used in diarrhea. The identity of the drug is uncertain and there is no scientific evidence for its value; hence it is now little used.