Do not take Detrol if you are allergic to tolterodine or or fesoterodine (Toviaz), if you have untreated or uncontrolled narrow-angle glaucoma, or if you have a blockage of the urinary tract, stomach, or intestines.
Before you take Detrol, tell your doctor if you have kidney or liver disease, glaucoma, myasthenia gravis, or a personal or family history of "Long QT syndrome."
Do not crush, chew, break, or open a Detrol LA controlled-release capsule. Swallow it whole. Breaking or opening the pill may cause too much of the drug to be released at one time.
Detrol may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert. Drinking alcohol can increase some of the side effects of Detrol.
There are many other drugs that can interact with Detrol. Tell your doctor about all medications you use. This includes prescription, over the counter, vitamin, and herbal products. Do not start a new medication without telling your doctor. Keep a list of all your medicines and show it to any healthcare provider who treats you.
Before taking this medicine
You should not use Detrol if your are allergic to tolterodine or fesoterodine (Toviaz), or if you have:
a blockage of the urinary tract (difficulty urinating);
a blockage in your stomach or intestines; or
untreated or uncontrolled narrow-angle glaucoma.
To make sure you can safely take Detrol, tell your doctor if you have any of these other conditions:
liver disease;
kidney disease;
myasthenia gravis;
glaucoma; or
a personal or family history of Long QT syndrome.
FDA pregnancy category C. It is not known whether Detrol will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medication. It is not known whether tolterodine passes into breast milk or if it could harm a nursing baby. Do not use Detrol without telling your doctor if you are breast-feeding a baby.
 Detrol pregnancy and breastfeeding warnings (more detail)
