Let's take a minute to talk about your medication. This is darifenacin. This medicine treats symptoms caused by an overactive bladder. It may help you urinate less, have fewer urges to go, and have fewer accidental leaks. Darifenacin is taken one time a day, at the same time each day. You should take it exactly as your doctor tells you to. You can take it with or without food. You should take it with water, and swallow the tablet whole. Most people tolerate this medicine well. Side effects include headache, blurred vision, trouble emptying the bladder and urinary tract infections. They also include a dry mouth, heartburn, nausea, and constipation. You should ask your doctor how to prevent constipation, and when to report symptoms. Other possible side effects are drowsiness or dizziness. Drinking alcohol may make these effects worse. You should wait until you know how darifenacin affects you before doing activities that require you to be alert, like driving. If these or other side effects become reasons you want to stop taking this medicine, please talk to your doctor or pharmacist. It's important to know that this medicine can make your body sweat less. You will need to take care to stay cool in hot weather. You should stay in the shade, drink plenty of water, and avoid too much physical activity. As with any medicine, rare but more serious side effects could occur, like an allergic reaction. Get medical help right away if you have a rash, itching, trouble breathing or swelling in your face or mouth. Drug interactions can occur. You should always check with your doctor or pharmacist before taking other medicines. For best results with darifenacin, be sure to read the Patient Information sheet.