<prompt> Which of the following drugs is used to reverse the effect of d-tubocurarineh -AtropineNeostigminePhysostigmineOrganophosphorus  <response>: Ans. is b i.e., Neostigmine o D-tubocurarine is a competitive neuromuscular blocker. o Anticholinesterases are used to reverse the action of competitive neuromuscular blocker. o Neostigmine is an anticholinesterase which is almost routinely used after pancuromium and long acting blocker to hasten the recovery at the end of operation. 