Diuretics are known to make RLS worse. It is thought that this is a result of the fact that it lowers potassium. Busunsc713 pointed out that there are potassium sparing diuretics. So my questions for anyone taking a diuretic. 1) is it a potassium sparing one - triamterene, spironolactone, eplerenone, amiloride? 2) If not are you taking extra potassium? 3) Does the diuretic make your RLS worse?