Statins have been shown to reduce cardiovascular risk in patients with chronic kidney disease (CKD), though the evidence is stronger for earlier stages of CKD. Several large trials found simvastatin reduced major atherosclerotic events and mortality in patients with CKD stages 3-5, including those on dialysis. Guidelines recommend considering statins for primary prevention of cardiovascular disease in CKD as in those without CKD. Dosage adjustments are recommended for some statins in more severe CKD due to increased risk of adverse effects, though trials found simvastatin, atorvastatin, and pravastatin can be used at standard doses even in stage 3 CKD without excess risk when monitored closely.