#laxative  a mild cathartic
  supertype:  #purgative__cathartic__physic__aperient  a purging medicine; stimulates evacuation of the bowels
  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

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