<prompt> Which one of the following drugs increases gastrointestinal motility -GlycopyrrolateAtropineNeostigmineFentanyl  <response>: Ans. is c i.e., Neostigmine Cholinergic drugs and antiadrenergic drugs increase G.I. motility. o Anticholinergic drugs and adrenergic drugs decrease GI motility. o Amongst the given options, neostigmine is cholinergic anticholinesterase. o Glycopyrrolate and atropine are anticholinergics. o Fentanyl is an opioid and opioids decrease intestinal motility. 