Drug interactions
Fluvastatin + Vitamin b3
Severity: Moderate
Fluvastatin and Vitamin b3: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Lipid-lowering doses of niacin combined with a statin may increase the risk of myopathy and rarely rhabdomyolysis. The risk appears greatest at higher niacin doses and in patients with renal impairment or older age.
What this interaction means in plain words
Fluvastatin and Vitamin b3 can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Fluvastatin belongs to Cardiovascular; Vitamin b3 belongs to Gastrointestinal Tract.
Why it happens
Additive myotoxicity; the mechanism is not fully established.
What to do
Use the lowest effective doses and counsel patients to report unexplained muscle pain or weakness. Check CK if symptoms occur and stop therapy if myopathy is suspected.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Vitamin b3
- Lovastatin + Vitamin b3 Major
- Simvastatin + Vitamin b3 Major
- Atorvastatin + Vitamin b3 Moderate
- Cholestyramine + Vitamin b3 Moderate
- Colestipol + Vitamin b3 Moderate
- Insulin aspart protamine / insulin aspart + Vitamin b3 Moderate
Other interactions of Fluvastatin
- Cyclosporine + Fluvastatin Major
- Cyclosporin + Fluvastatin Major
- Fluvastatin + Gemfibrozil Major
- Fluvastatin + Letermovir Major
- Fluvastatin + Red yeast rice Major
- Apalutamide + Fluvastatin Moderate
Frequently asked questions
Can I take Fluvastatin with Vitamin b3?
MediHelp rates the interaction as moderate. Fluvastatin and Vitamin b3 can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Lipid-lowering doses of niacin combined with a statin may increase the risk of myopathy and rarely rhabdomyolysis. The risk appears greatest at higher niacin doses and in patients with renal impairment or older age.
How serious is the interaction between Fluvastatin and Vitamin b3?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use the lowest effective doses and counsel patients to report unexplained muscle pain or weakness. Check CK if symptoms occur and stop therapy if myopathy is suspected.
What other medicines interact with Vitamin b3?
MediHelp also lists interactions of Vitamin b3 with, for example, Lovastatin, Simvastatin, Atorvastatin. The full list is on the Vitamin b3 page.
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