Bone marrow depression, hemolytic anemia; disseminated IV coagulation; severe hepatic disorder eg, fulminant hepatitis; dehydration; severe enteritis; interstitial pneumonia; MI, angina pectoris, arrythmia & cardiac failure; severe stomatitis; GI ulcer, hemorrhage & perforation; acute renal failure & nephrotic syndrome; toxic epidermal necrolysis, mucocutaneoocular syndrome (Stevens-Johnson syndrome); psychoneurologic disorders including leukoencephalopathy or other symptoms; acute pancreatitis; rhabdomyolysis; anosmia; lacrimal duct obstruction. Potentially, hepatic cirrhosis (prolonged prothrombin time, decreased albumin & cholinesterase).