Darifenacin is primarily used in the treatment of overactive bladder (OAB) syndrome. It works by relaxing the bladder muscles, which helps to reduce symptoms such as frequent urination, urgency, and incontinence. This medication is particularly beneficial for individuals who experience these symptoms due to involuntary bladder contractions. By blocking specific receptors in the bladder, darifenacin helps to increase bladder capacity and decrease the number of times a person needs to urinate. It is often prescribed when lifestyle changes and other non-pharmacological treatments have not provided sufficient relief. Patients typically take it once daily, and it is important to follow the prescribed dosage to achieve optimal results while minimizing potential side effects.