Quick answer
Ask your pharmacist or doctor before combining. The labels of prescription niacin and of statins such as atorvastatin, rosuvastatin and simvastatin report muscle damage, sometimes severe, when the two are taken together with niacin at 1 g a day or more. NIH says experts do not recommend high doses of nicotinic acid with a statin.1,2,3
Key facts
- The prescription niacin label advises caution with statins because the combination can raise the risk of myopathy and rhabdomyolysis.1
- It names older adults and people with diabetes, kidney failure or an uncontrolled underactive thyroid as particularly at risk.1
- On the simvastatin label, myopathy affected 1.24% of Chinese patients in a large trial who took simvastatin with extended-release niacin at 2 g a day.4
- The patient leaflets for atorvastatin and rosuvastatin list niacin among the medicines to tell your doctor about.2,5
Ask your pharmacist or doctor first
Myopathy and rhabdomyolysis, muscle damage that can be severe, have been reported when statins were combined with niacin at 1 g a day or more. The labels of prescription niacin, atorvastatin, rosuvastatin and simvastatin all describe this, and the simvastatin label advises against the combination at that dose in Chinese patients. NIH says experts do not recommend high doses of nicotinic acid for people taking a statin.1,2,3,4,5
On the medicine's label
What the labels say
Statins can cause myopathy on their own: muscle pain, tenderness or weakness with a raised level of creatine kinase, a muscle enzyme. Its severe form, rhabdomyolysis, can injure the kidneys. The atorvastatin, rosuvastatin and simvastatin labels each report cases when the statin was taken with niacin at 1 g a day or more, the amount used to change blood fats.2,4,5
The prescription niacin label gives the same caution from the other side, for statins as a group. It reports that in AIM-HIGH, a trial in which everyone took simvastatin, 4 of 1,718 people given extended-release niacin developed rhabdomyolysis, against 1 of 1,696 in the comparison group.1
Who is most at risk
For the niacin and statin combination, the niacin label names older adults and people with diabetes, kidney failure or an underactive thyroid that is not controlled. The atorvastatin and rosuvastatin labels add age 65 or over, kidney problems and higher statin doses as risk factors for muscle damage in general.1,2,5
The simvastatin label goes further. It advises against combining simvastatin with niacin at 1 g a day or more in Chinese patients, among whom muscle damage was more common.4
What about smaller amounts?
The documented cases involve niacin at 1 g a day or more, which is prescription territory. The upper limit for niacin from supplements is 35 mg a day for adults, but some niacin-only supplements contain 500 mg or more per serving. The labels do not say what smaller amounts do alongside a statin, so tell your doctor about every product with niacin.3,6
If you take prescription niacin, its label also says vitamins or other supplements with large amounts of niacin or nicotinamide can add to its side effects.1
Signs to report
What to ask your pharmacist
- Does my statin's label mention niacin?
- Do any of my supplements, including a multivitamin or B complex, contain niacin, nicotinic acid or nicotinamide?
- Am I in one of the groups the labels name as more at risk?
- Should my doctor check my muscle enzyme levels while I take both?
Questions people ask
Does adding niacin to a statin lower the chance of a heart attack?
Not in the trials described. The prescription niacin label says adding it did not reduce cardiovascular events in people already treated with a statin, and NIH reports that large trials found no fewer heart attacks or strokes but more side effects.1,6
Is the niacin in a multivitamin a problem with a statin?
The labels describe the muscle risk at 1 g a day or more and say nothing about smaller amounts either way. Tell your doctor or pharmacist about every supplement you take, so they can judge your own case.1
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Sources
- Niacin extended-release tablets: prescribing information and patient information (Amneal Pharmaceuticals). DailyMed, U.S. National Library of Medicine. Published September 18, 2026. Opened 2026-10-07.
- Crestor (rosuvastatin calcium) tablets: prescribing information and patient information (AstraZeneca). DailyMed, U.S. National Library of Medicine. Published September 30, 2026. Opened 2026-10-07.
- National Institutes of Health, Office of Dietary Supplements. Niacin: Fact Sheet for Consumers. Updated March 22, 2021. Opened 2026-10-07.
- Zocor (simvastatin) tablets: prescribing information and patient information (Organon). DailyMed, U.S. National Library of Medicine. Published April 3, 2025. Opened 2026-10-07.
- Lipitor (atorvastatin calcium) tablets: prescribing information and patient information (Viatris Specialty). DailyMed, U.S. National Library of Medicine. Revised April 2024. Opened 2026-10-07.
- National Institutes of Health, Office of Dietary Supplements. Niacin: Fact Sheet for Health Professionals. Updated November 18, 2022. Opened 2026-10-07.
This page is information, not medical advice. Talk to your doctor or pharmacist about your own situation.