TRITURATIONES, TRITURATIONS.—Mixtures containing active drugs in powder form; prepared by mixing the substance (10%) with powdered sugar of milk. For the official trituration see Trituratio Elaterini, U.S.P., under Elaterinum.
TROCHISCI, TROCHES (Lozenges).—Tablets intended to be dissolved in the mouth for their local effect on the mucous membrane of the mouth and the throat. For the official troches see under the names of the principal ingredients.
Ulmus (Ulmus), Elm, U.S.P. (Elm Bark, Slippery Elm).—The inner bark.
Action and Uses: Obsolete demulcent.
Trochisci Ulmi (Troch. Ulmi), Troches of Elm, N.F.—Each troche contains elm, tragacanth, sugar and methyl salicylate.
Uses: Demulcent expectorant.
Dosage: 1 troche (N.F.).
UNGUENTA, OINTMENTS.—Soft, fatty solids, of such consistency that they are readily spread at ordinary temperatures. For the official ointments, see under the names of the respective principal constituents. For Unguentum, see under Adeps; for Unguentum Diachylon, under Plumbi Oxidum, and for Unguentum Fuscum, under Camphora.
Uranii Nitras (Uran. Nit.), Uranium Nitrate, U.S.P. (Uranyl Nitrate).—UO2(NO3)2 + 6H2O.
Light, yellow, odorless, somewhat efflorescent, radioactive crystals, having a bitter astringent taste. Freely soluble in water (1:1.2); also soluble in alcohol or ether.