Sakit kepala, mual, kehilangan nafsu makan, demam, ruam kulit. Leukopenia fatal, neutropenia, trombositopenia, anemia aplastik, agranulositosis & diskrasia darah. Stomatitis, parotitis, pankreatitis, hepatitis. Vertigo, tinitus, neuropati perifer, ataksia, insomnia, konvulsi, depresi mental, meningitis aseptik, halusinasi. Hematuria, proteinuria, kristaluria, sindroma nefrotik; reaksi hipersensitivitas.