Side effects may range from mild to serious complications. Consult your doctor immediately when you feel the following symptoms: Dry mouth, constipation, nausea, stomach upset, stomach pain, blurred vision, dry eyes, dizziness, or weakness may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly, severe stomach/abdominal pain, constipation for 3 or more days, difficulty urinating, signs of kidney infection (such as burning/painful/frequent urination, fever, pink/bloody urine), mental/mood changes (such as confusion, hallucinations), eye pain/swelling/redness, vision changes (such as seeing rainbows around lights at night).
Seek emergency medical help if you expereince allergies (rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing) or the symptoms mentioned above while taking this drug.