The article provides an overview of modern approaches to pharmacotherapy of overactive bladder. It has been shown that the choice of drug therapy for overactive bladder should be made taking into account the pathophysiological mechanisms of the development of the disease, the characteristics of its clinical course, as well as the potential risks of developing side effects of treatment. A pathogenetic rationale for the choice of treatment tactics for different categories of patients is presented, including those with a hypersensitive bladder, bladder outlet obstruction, neurological and geriatric patients. The pharmacological properties of the 3-adrenergic receptor agonist mirabegron are described, which provide high efficacy and a favorable safety profile in the treatment of patients with overactive bladder. The practical issues of prescribing mirabegron in various clinical situations are considered.