#purgative__cathartic__physic__aperient  a purging medicine; stimulates evacuation of the bowels
  supertype:  medicament__medicine__medication__medicinal_drug__medicinaldrug  something that treats or prevents or alleviates the symptoms of disease
  subtype:  bitter_aloes__aloes__aloe  a purgative made from the leaves of aloe
  subtype:  castor_oil  a purgative extracted from the seed of the castor plant; used in paint and varnish as well as medically
  subtype:  Epsom_salts  hydrated magnesium sulfate used as a laxative
  subtype:  laxative  a mild cathartic
     subtype:  phenolphthalein  a laxative used in many preparations under various trade names; also used as an acid-base indicator in titrations involving weak acids and strong bases because it is brilliant red at high alkalinity and colorless below pH 8
  subtype:  milk_of_magnesia__magnesium_hydroxide__magnesiumhydroxide  purgative consisting of a milky white liquid suspension of magnesium hydroxide; used as a laxative and (in smaller doses) as an antacid
  subtype:  Seidlitz_powder__Seidlitz_powders__Rochelle_powder  an effervescing salt containing sodium bicarbonate and Rochelle salt and tartaric acid

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