Localization of the Site of Action of Triamterene Diuretic.

Abstract
Summary The pteridine compound triamterene was studied in 11 dogs using the stop flow method. These data support the hypothesis that the site of action of triamterene is the distal tubule of the kidney and that triamterene produces its natriuretic effect by reducing Na reabsorption in this area. No evidence was obtained for a proximal renal tubular effect.