Sakit kepala, mual, kehilangan nafsu makan, demam & ruam kulit; leukopenia fatal, neutropenia, trombositopenia, anemia aplastik; stomatitis, parotitis, pankreatitis, hepatitis; vertigo, tinitus, neuropati perifer, ataksia, insomnia, kejang, depresi mental, meningitis aseptik, halusinasi; hematuria, proteinuria, sindrom nefrotik, kristaluria, reaksi hipersensitivitas.