A Study to Test the Effects of Tolterodine Tartrate in Patients With Overactive Bladder (0000-107)

Inclusion Criteria: * Patient is a postmenopausal female 40 to 75 years of age * Patient has a Body Mass Index (BMI) less than or equal to 35 kg/m2 * Patient has a documented history of overactive bladder for at least 6 months prior to screening Exclusion Criteria: * Patient has stress or mixed incontinence * Patient has a history of interstitial cystitis, painful bladder syndrome, or chronic pelvic pain * Patient has a history of stroke, seizures, or major neurological disorders * Patient has a history of fecal incontinence * Patient has a history of continual urine leakage * Patient has had surgery to correct stress urinary incontinence or pelvic organ prolapse within 6 months of study start * Patient received bladder training of electrostimulation within 2 weeks of study start * Patient requires a catheter * Patient is taking medications that cannot be stopped for the duration of the trial including certain anticholinergics or smooth muscle relaxants * Patient began taking tricyclic antidepressants, serotonin/norepinephrine reuptake inhibitors, calcium channel blockers, ephedrine/pseudoephedrine, or diuretic therapy less than 8 weeks before study start * Patient has been on hormone replacement therapy for less than 12 weeks at study start * Patient must take medication for arrhythmia * Patient consumes more than 2 alcoholic beverages per day * Patient consumes more than 3 servings of caffeinated beverages per day (1 serving = 120 mg caffeine) * Patient has multiple and/or severe allergies to foods and drugs * Patient regularly uses any illegal drugs