Headache, encephalopathy, fever, disorientation, neuromuscular blockage, paresthesia, convulsion, muscle twitching, myasthenia gravis-like syndrome, numbness, peripheral neuropathy, skin tingling; vomiting, diarrhea; anemia, eosinophilia, leukopenia, thrombocytopenia; rash, itching; oliguria, proteinuria, casts, red & white cells in urine; dizziness, tinnitus, vertigo, visual disturbances/blurred vision; apnea, inj site pain/irritation, hypotension, severe pain induration & hematomas, prolonged PT, hyperkalemia, palpitation, immature circulating WBCs, leukemoid reaction, nystagmus, Fanconi-like syndrome w/ aminoaciduria & metabolic acidosis; increased alkaline phosphatase, AST or ALT, bilirubin, serum creatinine & BUN, decreased CrCl.