Rhubarb is a purgative, astringent and stomachic.
It is _used externally_ in the form of powder to ulcers, to promote a
healthy action.
It is given _internally_ in diarrhoea, dyspepsia, and a debilitated
state of the bowels. Combined with a mild preparation of calomel, it
forms an excellent purgative for children.
_Dose,_ of the _infusion,_ from one to two ounces; of the _powder,_
from one scruple to half a drachm as a purgative, and from six to ten
grains as a stomachic; of the _tincture_ and _compound tincture,_ from
one to four drachms; of the _compound pill,_ from ten to twenty grains.