BisacodylTabletsLaxativesCatharticsOrnidazoleDosage FormsChromatography, Reverse-PhaseChemistry, PharmaceuticalConstipationGastric LavagePhenolphthaleinSenna ExtractDefecationColon, AscendingTablets, Enteric-CoatedPicolinesColonoscopyPolyethylene GlycolsSimethiconeTherapeutic IrrigationThymelaeaceaeCitric AcidAquaporin 3