Action and Uses: Antiseptic, somewhat stronger than phenol and less toxic. Used in skin affections, and as intestinal antiseptic and anthelmintic for hookworm.

Dosage: Internally, 0.25 Gm. or 4 grains (U.S.P.). Externally as a 3 to 5 per cent. ointment.

Pasta Betanaphtholis (Past. Betanaphthol.), Betanaphthol Paste, N.F. (Lassar’s Naphthol Paste).—Betanaphthol (10%) and precipitated sulphur (50%) in petrolatum and soft soap.

Petroxolinum Betanaphtholis (Petrox. Betanaphthol.), Betanaphthol Petroxolin, N.F. (Betanaphthol Petrox).—Betanaphthol (10%) in liquid petroxolin.

Bismuthi Betanaphtholas (Bism. Betanaph.), Bismuth Betanaphthol, U.S.P. (Bismuth Betanaphtholate; also sold as Orphol).—Of somewhat varying composition.

A buff-colored or grayish-brown, nearly odorless, tasteless powder. Nearly insoluble in water or alcohol.

Action and Uses: Used as an intestinal antiseptic, being decomposed into its constituents in the intestine, where it exerts the effects of bismuth salts and of betanaphthol.

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

Bismuthi et Ammonii Citras (Bism. et Ammon. Cit.), Bismuth and Ammonium Citrate, U.S.P. (Bismuth Ammoniocitrate).

Shining, pearly or translucent, odorless scales or white powder, with a metallic taste. Very soluble in water and sparingly soluble in alcohol.