Drug therapy for overactive bladder (OAB) is associated with improvements in symptoms and quality of life, but the short‐ and long‐term adherence and persistence is suboptimal. In this review we outline methods of measuring, and factors affecting, adherence to pharmacotherapy in patients with OAB. Clinical practice suggests that adherence rates reported in clinical trials are much greater than in real practice. Factors affecting adherence include psychological and social variables that might alter patients’ perception of the benefits of taking medication, and the effect of comorbidity and polypharmacy. Whilst there is some evidence that lack of efficacy and side‐effects are contributory, these additional factors are also important.

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Estrogens are known to have a major role in the function of the lower urinary tract although the role of exogenous estrogen replacement therapy in the management of women with lower urinary tract dysfunction remains controversial. Whilst for many years systemic and vaginal estrogen therapy was felt to be beneficial in the treatment of lower urinary and genital tract symptoms this evidence has recently been challenged by large epidemiological studies investigating the use of systemic hormone replacement therapy. Consequently the role of estrogen in the management of postmenopausal women with Overactive Bladder (OAB) remains uncertain. In addition the evidence base regarding the use of exogenous estrogen therapy has changed significantly over the last decade and has led to a major changes in current clinical practice. The aim of this article is to review the evidence for the role of estrogen therapy in the management of OAB focusing on current knowledge with regard to both systemic and local estrogen therapy as well as investigating the emerging role of combination therapy with antimuscarinic agents.

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