Baclofen is a centrally acting gamma-ammino butyric acid agonist that is used like muscular relaxant in disorders with spasticity and intractable hiccups. Although encouraging and safe results were provided 5 mg/day in hemodialysis patients, his pharmacokinetic and pharmacodinamic properties are not well known in end stage renal disease. We present here the case of a hemodialysis patient with intractable hiccups who developed baclofen-associated encephalopathy with this recommended dose.