You should not use  solifenacin if you have untreated or uncontrolled narrow-angle glaucoma, a blockage in your digestive tract (stomach or intestines), or if you are unable to urinate.
Before taking this medicine
You should not use solifenacin if you are allergic to it, or if you have:
untreated or uncontrolled narrow-angle glaucoma;
a stomach disorder causing delayed emptying; or
if you are unable to urinate.
Tell your doctor if you have ever had:
glaucoma;
liver disease;
kidney disease;
trouble emptying your bladder (or you have a weak stream of urine);
slow digestion;
a blockage in your stomach or intestines; or
long QT syndrome.
It is not known whether this medicine will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant.
You should not breastfeed while using solifenacin.
How should I take solifenacin?
Follow all directions on your prescription label and read all medication guides or instruction sheets. Use the medicine exactly as directed.
Solifenacin is usually taken once per day with or without food. Follow your doctor's instructions.
Do not crush, chew, or break the tablet. Swallow it whole.
Shake the oral suspension (liquid) before you measure a dose. Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon).
Take the tablet with water.
After taking solifenacin liquid drink a glass of water or milk. Avoid taking the liquid with food or other drinks or you may have a bitter aftertaste.
Store  solifenacin in the original container at room temperature, away from moisture and heat. Keep the bottle tightly closed when not in use. Throw away any unused liquid 28 days after you first opened the bottle.
What happens if I miss a dose?
Tablets: Skip the missed dose and use your next dose at the regular time. Do not take 2 doses on the same day.
Oral suspension: Take the medicine as soon as you can, but skip the missed dose if you are more than 12 hours late for the dose. Do not take two doses at one time.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
