NutriStack
Febuxostat and Vitamin B3, a conflict.
High-dose Vitamin B3 products containing niacin or nicotinic acid can increase serum uric acid and precipitate gout. That effect can work against febuxostat's urate-lowering goal, particularly if urate is not yet at target. The risk is most relevant for high-dose niacin products, not normal dietary Vitamin B3 intake.
One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
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What the row says.
Every entry follows the same shape: what is happening, the mechanism, the recommendation, and the primary literature.
At a glance
- Substances
- Febuxostat and Vitamin B3
- Pair type
- Conflict
- Evidence (highest tier)
- Moderate
- Source citations
- 3 sources
- Stack Score effect
- −10 to your Stack Score (per scored conflict row).
- Scope
- Supplement × Prescription
- Last verified
- May 30, 2026
Conflict · Moderate evidence
Conflict
What is happening. High-dose Vitamin B3 products containing niacin or nicotinic acid can increase serum uric acid and precipitate gout. That effect can work against febuxostat's urate-lowering goal, particularly if urate is not yet at target. The risk is most relevant for high-dose niacin products, not normal dietary Vitamin B3 intake.
Mechanism. Febuxostat lowers urate by inhibiting xanthine oxidase. Niacin can reduce renal urate clearance and increase serum urate, creating a pharmacodynamic conflict with febuxostat's intended effect.
Recommendation. Do not add high-dose Vitamin B3 during febuxostat therapy without checking with your prescriber. If niacin is required, monitor serum urate after dose changes and report any increase in flares. Keep taking febuxostat as prescribed unless your clinician changes the plan.
Sources (3)
- Ben Salem C, Slim R, Fathallah N, Hmouda H. Drug-induced hyperuricaemia and gout. Rheumatology (Oxford). 2017;56(5):679-688. PMID 27498351
- Kei A, Elisaf MS. Nicotinic acid: clinical considerations. Expert Opin Drug Saf. 2012;11(4):551-564. PMID 22564238
- Becker MA, Schumacher HR, Wortmann RL, MacDonald PA, Eustace D, Palo WA, et al. Febuxostat compared with allopurinol in patients with hyperuricemia and gout. N Engl J Med. 2005;353(23):2450-2461. PMID 16339094
Stack Score
How this pair moves the number.
Effect on the composite score
If both Febuxostat and Vitamin B3 are in the same stack, this pair applies −10 to your Stack Score (per scored conflict row).
The full algorithm, the clamping rules, and four worked stacks are documented at /methodology/stack-score.
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