A favorite medicine with physicians and others, for sore mouth and sore throat. It often does more good to sore mouths, in babies especially, than anything else. But it must not be swallowed without limitation. While safe in doses of a few grains, half-ounce doses of it are dangerous; sometimes even producing death.

Dose, for a grown person, from ten to twenty grains; for a child, three or four years old, five grains; dissolved in water. Its solution also makes a very good gargle for sore throat.