The internal administration of the oxide or other astringent zinc salts checks the secretions of the skin.

Synergists

The oxides of silver and of bismuth are much allied in action with oxide of zinc: henbane and belladonna promote its power of controlling perspiration (v. p. 312). The chloride of zinc resembles in corrosive and disinfectant properties the chloride of mercury, and both the chloride and nitrate are allied in action with other mineral caustics.

Antagonists

The chemical antidotes in cases of poisoning by the corrosive compounds of zinc are lime-water, alkaline carbonates, and tannic acid; these should be given in mucilage or milk. Valerianate of zinc is decomposed by acids and by most metallic salts. Purgatives and diaphoretics interfere with the action of zinc salts.

Therapeutical Action (External)