<prompt> Atracurium is metabolized and excreted byKidneyLiverBrainHoffmans elimination  <response>: Ans. d Hoffmans elimination. Ref. Harrisons, Medicine, 18th735ATRACURIUM BESYLATE Long acting and non-depolarising muscle relaxant. Muscle relaxant of choice in renal failure or anephric patients. pH of solution is 3.5. Stored at 4degC. Duration of action doubled at 25degC. Metabolism mainly by Hofmann elimination a chemical degradation and hydrolysis in plasma and elsewhere in body. Major metabolite is laudanosine, which is CNS- stimulant. 