-clarithromycin
-cyclosporine
-erythromycin
-fluoxetine
-medicines for fungal infections, like fluconazole, itraconazole, ketoconazole or voriconazole
-vinblastine

They need to know if you have any of these conditions:
-difficulty passing urine
-glaucoma
-intestinal obstruction
-irregular heartbeat or you have a family member with irregular heartbeat
-kidney disease
-liver disease
-myasthenia gravis
-an unusual or allergic reaction to tolterodine, fesoterodine, other medicines, foods, dyes, or preservatives
-pregnant or trying to get pregnant
-breast-feeding

It may take 2 or 3 months to notice the full benefit from this medicine.

You may need to limit your intake tea, coffee, caffeinated sodas, and alcohol. These drinks may make your symptoms worse.

You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this drug affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells.

Your mouth may get dry. Chewing sugarless gum or sucking hard candy, and drinking plenty of water may help. Contact your doctor if the problem does not go away or is severe.

This medicine may cause dry eyes and blurred vision. If you wear contact lenses you may feel some discomfort. Lubricating drops may help. See your eye doctor if the problem does not go away or is severe.

Avoid extreme heat. This medicine can cause you to sweat less than normal. Your body temperature could increase to dangerous levels, which may lead to heat stroke.

Keep out of the reach of children.

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Throw away any unused medicine after the expiration date.