<prompt> All of the following pa of the treatment of Li toxicity, except:Treating dehydrationIngestion of polystyreneHemodialysisUsing an antagonist  <response>: No antidote has been described for treatment of lithium toxicity. Ref: Meylers Side Effects of Psychiatric Drugs By Jeffrey K. Aronson, 2008, Page 125; Kaplan and Sadocks Psychiatry, 9th Edition, Page, 1071. 