Shock; SJS, erythema multiforme syndrome & Lyell syndrome (toxic epidermonecrosis); pruritus, exanthema (erythema, wheal) fever, urticaria, lymphadenopathy, arthralgia, anaphylactic reaction; renal insufficiency; reduction of Hb conc, anemia, granulocytopenia, thrombocytopenia, neutropenia, eosinophilia, hemolytic anemia; elevation of ALT, AST, AL-P, bilirubin, LDH, y-GPT; severe enterocolitis w/ hemafecia eg, pseudomembranous enterocolitis, abdominal pain, diarrhea, nausea, vomiting, anorexia; interstitial pneumonia, PIE syndrome. accompanied w/ fever, cough, abnormal chest x-ray, dyspnea; candidal intertrigo; symptoms of vit K deficiency (hypoprothrombinemia, hemorrhage frequency) & vit B deficiency (glossitis, stomatitis, anorexia, neuritis); numbness.