Senna is a purgative, but is apt to gripe when given alone; therefore
it is combined with some aromatic, such as cloves or ginger, and the
infusion should be made with _cold_ instead of hot water. It usually
acts in about four hours, but its action should be assisted by
drinking warm fluids.
_Dose,_ of the _confection,_ commonly called _"lenitive electuary,"_
from one to three or four drachma at bedtime; of the _infusion,_ from
one to two ounces; of the _tincture,_ irom one to two drachms; of the
_syrup_ (used for children), from one drachm to one ounce.
_Caution._--Do not give senna, in any form except confection, in
hemorrhoids, and never in irritability of the intestines.