Background: Patients with mild-to-moderate renal failure have an increased risk of cardiovascular disease (CVD), which is not fully explained by the presence of classical cardiovascular risk factors. Oxidative stress has been proposed to play a major role in the development of CVD among renal failure patients. We investigated, in patients with mild-to-moderate chronic kidney disease (CKD), the effect of an oxidative-stress-lowering therapy with pravastatin, vitamin E and homocysteine-lowering on carotid intima-media thickness and endothelial function (two strong surrogate markers of cardiovascular risk), and renal function.