tolterodine, a muscarinic receptor antagonist. ▪ INDICATIONS: It is used to treat overactive bladder (frequency and urgency). It controls bladder incontinence by controlling contractions. ▪ CONTRAINDICATIONS: Factors that prohibit its use include known hypersensitivity, uncontrolled narrow-angle glaucoma, urinary retention, and gastric retention. ▪ ADVERSE EFFECTS: Adverse effects include paresthesia, fatigue, headache, chest pain, hypertension, vision abnormalities, xerophthalmia, abdominal pain, constipation, dry mouth, dyspepsia, dysuria, urinary retention, urinary frequency, urinary tract infection, rash, pruritus, bronchitis, cough, pharyngitis, and upper respiratory infection. Common side effects include anxiety, dizziness, nausea, vomiting, and anorexia.