<prompt> Which of the following drugs are belived to be effective in the treatment of post-operative shivering!OndansetronDiclofenacPethidineParacetamol  <response>: Ans. is c i.e., Pethidine o Pethidine is most effective drug for treatment of PAS Post-anaesthesia shivering. o Other drugs used are --clonidine, doxapram, ketanserin, alfentonil, butorphanol, chlorpromazine. 