Investigational drugs show promise for treating overactive bladder

In a recent study of patients with overactive bladder (OAB), a 30 mg extended release formulation of propiverine hydrochloride was at least as effective and safe as a 4 mg extended release formulation of tolterodine tartrate. Both medications are called antimuscarinic drugs that block certain cell receptors, but propiverine differs from other antimuscarinics because of a dual mode of action.
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