Patients w/ urgency/urge incontinence, organic causes for increased micturition frequency or nocturia (eg, benign prostate hyperplasia, UTI, bladder stones/tumors), polydipsia & poorly adjusted DM. Water retention &/or hyponatremia may occur w/o concomitant reduction of fluid intake. Monitor serum Na in concomitant use w/ drugs known to induce SIADH & NSAIDs. Discontinue use during acute intercurrent illness characterized by fluid &/or electrolyte imbalance (eg, systemic infections, fever, gastroenteritis). Pregnancy & lactation.