*Phenolphthaleinum (Phenolphthal.), Phenolphthalein, U.S.P.
White or nearly white, odorless, tasteless powder. Almost insoluble in water; soluble in alcohol (1:13).
Action and Uses: Mild but efficient cathartic. It may cause some irritation to the rectum and lower bowel and very large doses have produced alarming secondary symptoms.
Dosage: 0.15 Gm. or 2-1/2 grains (U.S.P.).
Trochisci Phenolphthaleini (Troch. Phenolphthal.), Troches of Phenolphthalein, N.F.—Each troche contains phenolphthalein (0.06 Gm. or 1 grain) with acacia, sugar, vanillin and carmine.
Dosage: 1 troche.
*Phenylis Salicylas (Phenyl. Salicyl.), Phenyl Salicylate, U.S.P. (Salol).
White powder, with an aromatic odor and a slight, characteristic taste. Slightly soluble in water (1:6670); freely soluble in alcohol (1:6), and in fixed or volatile oils.
Action and Uses: Intestinal antiseptic, by the liberation of phenol and salicylic acid.
Dosage: 0.3 Gm. or 5 grains (U.S.P.) best in powder; may be inclosed dry in capsules or cachets.