This section is from the "A Handbook of Useful Drugs" book, by State Medical Examining and Licensing Boards.
Properties : Zinc oxid occurs as a very fine, amorphous, white or yellowish-white powder, free from gritty particles, without odor or taste. It is practically insoluble in water and in alcohol.
Incompatibilities: Zinc oxid is incompatible with acids.
Action and Uses: Zinc oxid is antiseptic and astringent and is widely used either alone or in combination with boric acid, bismuth subnitrate and starch as a dusting-powder and as a sedative in ointment for a variety of skin diseases. By some it is thought to be a nervine, but this is probably incorrect. It is now rarely used internally.
Dosage: 0.25 gm. or 4 grains.