Disturbed electrolyte & water balance; circulatory disturbances especially in elderly eg, feeling of pressure in the head, dizziness, mouth dryness, visual impairment; dehydration, circulatory collapse, thrombophilia; K-depletion; reduced serum Ca; GI disorders (eg, nausea, vomiting, diarrhoea), allergic reactions (eg, rashes, vasculitis, fever, interstitial nephritis); leukopenia, agranulocytosis, anaemia, thrombocytopenia; hydronephrosis, prostatic hypertrophy, ureterostenosis; transient rise in serum creatinine & urea; increased uric acid conc; rise in serum cholesterol & triglyceride levels; acute pancreatitis; aggravated metabolic alkalosis.