Discontinue treatment if signs/symptoms of hematologic abnormalities appear; hepatic toxicity arise (eg, fever, rash, jaundice) or w/ significant elevation of hepatic enzymes; symptoms of allergic or hypersensitivity reactions occur. Hypersensitivity & anaphylactoid reactions including hives, rash, itching, eczema & shock. May cause drowsiness or dizziness; thrombocytopenia or leukopenia. Liver dysfunction. Pregnancy. Not recommended during lactation. Childn. Elderly.