Get emergency medical help if you have signs of an allergic reaction (hives, difficult breathing, swelling in your face or throat) or a severe skin reaction (fever, sore throat, burning eyes, skin pain, red or purple skin rash with blistering and peeling).
Stop using solifenacin and call your doctor at once if you have:
severe stomach pain, or constipation for 3 days or longer;
pain or burning when you urinate;
headache, confusion, drowsiness, hallucinations;
vision changes, eye pain, or seeing halos around lights;
little or no urination, pain or burning when you urinate;
dehydration symptoms--dizziness, tiredness, feeling very thirsty or hot, decreased sweating, or hot and dry skin; or
high potassium level--nausea, weakness, tingly feeling, chest pain, irregular heartbeats, loss of movement.
Common side effects may include:
blurred vision;
dry mouth, dry eyes;
painful urination;
constipation; or
heat stroke--decreased sweating, dry skin, dizziness, tiredness, nausea, feeling hot.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Solifenacin side effects (more detail)
