Dosage: 0.5 Gm. or 8 grains (U.S.P.).

Collodium Stypticum (Collod. Stypt.), Styptic Collodion, N.F.—Tannic acid (20%) and flexible collodion. There is no advantage in applying tannin as collodion.

*Glyceritum Acidi Tannici (Glycer. Acid. Tann.), Glycerite of Tannic Acid, U.S.P. (Glycerite of Tannin).—Tannic acid (20%) in glycerin.

Dosage: 2 Cc. or 30 minims (U.S.P.).

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.

Dosage: 0.5 Gm. or 8 grains, diluted.