Anorexia, nausea, emesis; acute, subacute or chronic pulmonary sensitivity reactions; maculopapular, erythematous, eczematous eruption, pruritus, urticaria, angioedema; anaphylaxis, asthmatic attack (in patients w/ history of asthma), cholestatic jaundice, fever, arthralgia; hemolytic anemia, granulocytopenia, eosinophilia, megaloblastic anemia; peripheral neuropathy, headache, dizziness, nystagmus, drowsiness; transient alopecia.