_*Glyceritum Acidi Tannici (Glycer. Acid. Tann.), Glycerite of Tannic Acid, U.S.P._ (Glycerite of Tannin).--Tannic acid (20%) in glycerin.
_Trochisci Acidi Tannici (Troch. Acid. Tann.), Troches of Tannic Acid, U.S.P._--Each troche contains tannic acid (0.06 Gm. or 1 grain), with sugar and tragacanth, flavored with orange flower.
_Unguentum Acidi Tannici (Ung. Acid. Tann.), Ointment of Tannic Acid, U.S.P._--Tannic acid (20%), in glycerin and ointment.
=Acidum Tartaricum (Acid. Tart.), Tartaric Acid, U.S.P.=--Obtained from wine lees or argol.
A white, odorless powder, with an acid taste. Very soluble in water (1:0.75) and in alcohol (1:3.3).
ACTION AND USES: Mild acid; used in the manufacture of effervescent salts.
=Acidum Trichloraceticum (Acid. Trichloracet.), Trichloracetic Acid, U.S.P.=--CCl{ 3}.COOH.
Colorless, deliquescent crystals with a slight characteristic odor. Miscible with water and with alcohol.
ACTION AND USES: Caustic, for the removal of warts and other skin blemishes. Used also as local hemostatic.
=Aconitina (Aconitin.), Aconitine, U.S.P.=--An alkaloid obtained from aconite.
A white, odorless powder. Very slightly soluble in water, soluble in alcohol (1:28) and in ether (1:65).
ACTION AND USES: Similar to those described under aconite. As several alkaloidal preparations of aconite, of varying activity, are sold under the name of aconitine, its use is not advisable.
DOSAGE: 0.15 mg. or 1/400 grain (U.S.P.).
_Oleatum Aconitinae (Oleat. Aconitin.), Oleate of Aconitine, N.F._--Aconitine (2%) in oleic acid and olive oil.
USES: Without advantage over aconite preparations for external application.
=*Aconitum (Aconit.), Aconite, U.S.P.= (Monkshood, Aconite Root, Aconiti Tuber, P.I.).--A tuberous root, yielding about 0.5 per cent. of ether-soluble alkaloids; also assayed biologically. Physicians should specify preparations that have been assayed biologically, since the alkaloidal assay is not a reliable index of activity.
ACTION AND USES: Slows the pulse and lowers the blood pressure, but this action in therapeutic doses is uncertain. Used in the treatment of febrile colds; also for counter-irritation, in the form of the tincture. Used also as a local anesthetic, and by some still believed to be useful in the treatment of the symptoms arising from excessive cardiac hypertrophy. Toxic symptoms may occur from local absorption.