History of bloody diarrhoea, 6 months back, stool R/E revealed Entamoeba histolytica and treated with a course of Metronidazole and Diloxanide furate. Then symptoms subsided but same problem started 1 and half month back, stool revealed same result, so again took a course of Metron DF and Ciprofloxacin which didnto at all releive the symptoms. Have 2-3 episodes of bloody diarrhoea and severe abdominal cramps. Sigmoidoscopy done and revealed active ulcerative colitis and same was in biopsy, My Doctor prescribed me mesalamine 2 tabs HS but this didnot releive my pain abdomen. Have been taking medicines for 2 weeks , please help