Cutaneous hypersensitivity reactions eg, skin rashes, angioedema, SJS/TEN; decreased serum bicarbonate, Ca & Na, hyperammonemia, hyperchloremia, hyperuricemia, increased serum glucose; anemia, leukopenia, neutropenia, pancytopenia; increased serum alkaline phosphatase & bilirubin; renal disease; nephrotoxicity w/ chronic overdose; dose-related hepatic injury.