Pain or abdominal spasms, metallic taste, xerostomia, constipation, diarrhea, loss of appetite, nausea, vomiting; headache, motor abnormalities (ataxia), vertigo, psycho-emotional disorders, peripheral neuropathy (long-term use), cramps; leucopenia; dark-brown coloration of urine; urticaria, prurigo of teguments, eruption; itching, burning, pain & irritation of vag mucosa.