Niacin and Rosuvastatin interaction
Niacin and Rosuvastatin: both prescribing labels describe an interaction that usually calls for monitoring, a dose change, or spacing the doses.
Usually manageable with monitoring or a dose change. Tell your pharmacist you take both.
What the FDA labels say
From the Niacin label · effective 2026-04-15
The risk for myopathy and rhabdomyolysis are increased among elderly patients; patients with diabetes, renal failure, or uncontrolled hypothyroidism; and patients being treated with a statin.
Mortality and Coronary Heart Disease Morbidity Niacin extended-release tablets have not been shown to reduce cardiovascular morbidity or mortality among patients already treated with a statin.
Skeletal Muscle Cases of rhabdomyolysis have been associated with concomitant administration of lipid-altering doses (≥1 g/day) of niacin and statins.
Statins: Caution should be used when prescribing niacin with statins as these agents can increase risk of myopathy/rhabdomyolysis.
Statins Caution should be used when prescribing niacin (≥1 gm/day) with statins as these drugs can increase risk of myopathy/rhabdomyolysis [see Warnings and Precautions ( 5 ) and Clinical Pharmacology ( 12.3 )] .
From the Rosuvastatin (Crestor) label · effective 2026-04-29
Niacin, fibrates, and colchicine may also increase the risk of myopathy and rhabdomyolysis [see Drug Interactions (7.1) ] .
Niacin Prevention or Management: Consider if the benefit of using lipid-modifying dosages (≥1 g/day) of niacin concomitantly with CRESTOR outweighs the increased risk of myopathy and rhabdomyolysis.
Mechanism and Clinical Effect(s): Cases of myopathy and rhabdomyolysis have occurred with concomitant use of lipid-modifying dosages (≥1 g/day) of niacin with CRESTOR.
Taking more than these two? Interactions stack. Check your whole list at once; it stays in your browser.
Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.