Dosage: 0.03 Gm. or 1/2 grain.
EMPLASTRA, PLASTERS.—Plasters are solid preparations for external use, serving either as simple adhesives or for the conveyance of drugs. The commercial spread plasters have largely displaced the extemporaneously prepared product. For the various plasters see under the names of the principal constituents. For Emplastrum Elasticum, see under Resina; for Emplastrum Fuscum Camphoratum, see under Camphora; for Emplastrum Plumbi, see under Plumbi Oxidum.
EMULSA, EMULSIONES, EMULSIONS.—Emulsions are aqueous preparations in which oils or resins are suspended by means of mucilaginous substances.
For the official emulsions see under the names of the respective oils and resins.
*Ergota (Ergot.), Ergot, U.S.P. (Secale Cornutum, P.I., Ergot of Rye, Spurred Rye).
Action and Uses: Causes powerful tonic, sometimes tetanic contraction of the uterus and of the bloodvessel walls. Checks postpartum hemorrhage by contracting the uterus. Used for excessive menstrual flow and as a circulatory stimulant. Has also been tried but without success in a great variety of other diseases.
Dosage: 2 Gm. or 30 grains (U.S.P.).
Extractum Ergotae (Ext. Ergot.), Extract of Ergot, U.S.P.—A pilular extract of ergot. Probably does not contain some of the valuable constituents of ergot (the alkaloids).
Dosage: 0.25 Gm. or 4 grains (U.S.P.).
Extractum Ergotae Aquosum (Ext. Ergot. Aq.), Aqueous Extract of Ergot, N.F. (Ergoti Extractum P.I.).—A purified aqueous extract.