Summary

The revival of polymyxin antibiotics with the advent of multidrug resistant gram–negative bacteria in the recent decade has led to renewed interest in toxicity of this indispensable drug. We report a postoperative case of burst abdomen where colistin was started in view of Pseudomonas organism sensitive to colistin. Subsequently, the patient went into respiratory depression and encephalopathy after starting the treatment. She recovered promptly after stopping the drug.