purgatives & laxatives dà huáng is used for patterns with yang-ming heat, damp-heat, phlegm-heat, blood-heat, and blood-stasis. symptoms indicating the use of dà huáng high fever, profuse sweating, thirst, constipation, dysentery, hemorroids, abdominal distention and pain, delirium, nosebleeding, coughing of blood, painful urination, abscesses, sores. not in pregnancy, external…