Transient diarrhoea, abdominal pain, nausea, vomiting, headache, tinnitus, numbness, fever, alopecia, rash, pruritus, urticaria, angioedema, flushing, hiccups, cough, weakness, drowsiness, chills, hypotension, seizures, transient abnormalities in LFT (e.g. increased serum concentrations of aminotransferases, glutamyltransferase alkaline phosphatase, and/or bilirubin), hepatitis, increased BUN, decreased Hb concentration and/or hematocrit, leucopenia, eosinophilia, haematuria, cylindruria, migration of roundworms through the mouth and nose. Potentially Fatal: Myelosuppression, manifested as neutropenia (including agranulocytosis) and/or thrombocytopenia.