“…Current oral drugs used to treat AC include nitrates, calcium channel blockers, phosphodiesterase inhibitors, and some others (butylscopolamine, nifedipine, verapamil, carbutoerol, terbutaline, aminophylline, nitroglycerin, vasoactiveintestinalpeptide, cimetropium, loperamide, isosorbide, and sildenafil). [63][64][65][66][67][68][69][70][71][72][73][74][75] These drugs transiently relax LES smooth muscle and facilitate esophageal emptying.…”