Oxide of Zinc is an antispasmodic, astringent, and tonic.
_Used externally_, as an ointment, it forms an excellent astringent in
affections of the eyelids, arising from relaxation; or as a powder, it
is an excellent detergent for unhealthy ulcers.
_Used internally_, it has proved efficacious in St. Vitus's dance, and
some other spasmodic affections.
_Dose_, from one to six grains twice a day.