Methods and compositions for reducing the frequency of urination are disclosed. One method comprises administering to a subject in need thereof an effective amount of a pharmaceutical composition comprising an analgesic agent formulated in an extended-release formulation. Another method comprises administering to a subject in need thereof an effective amount of a pharmaceutical composition comprising multiple active ingredients formulated for extended-release. Yet another method comprises administering to a subject in need thereof an effective amount of a diuretic followed with another administration of an pharmaceutical composition comprising an analgesic agent formulated for extended-release.