Discontinue use & take appropriate therapy &/or measures if anaphylactic reactions develop; angioedema occurs. Assess other causes of frequent urination (heart failure or renal disease) before treatment. Use w/ caution in patients w/ clinically significant bladder outflow obstruction at risk of urinary retention; GI obstructive disorders & decreased GI motility; reduced renal & hepatic function; hiatus hernia/gastro-esophageal reflux &/or who are concurrently taking medicinal products (eg, bisphosphonates) that can cause or exacerbate esophagitis; autonomic neuropathy; myasthenia gravis. Reports of QT prolongation & torsade de pointes in patients w/ risk factors eg, preexisting long QT syndrome & hypokalemia. May cause blurred vision &, uncommonly, somnolence & fatigue which may negatively affect ability to drive & use machines. Use in pregnancy only if potential benefit justifies potential fetal risk. Not to be administered during nursing. Not to be used in childn.