Supplement × Prescription·a caution·Emerging evidence

Bempedoic Acid + Vitamin C

Caution Emerging evidence

Bempedoic acid can raise serum uric acid by competing with uric acid for renal tubular secretion via OAT2, and gout has been reported as an adverse effect. High-dose vitamin C (typically several grams per day) has a uricosuric effect that lowers serum uric acid. While this could theoretically offset bempedoic-acid-induced hyperuricemia, very high vitamin C intake also increases urinary oxalate and uric acid excretion, which can promote kidney stones in susceptible individuals. The interaction is minor and not a reason to avoid either agent.

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Pair type
Caution
Evidence
Emerging
Source citations
2
Scope
Supplement × Prescription
Last verified
June 4, 2026
CautionEmerging evidence

What is happening. Bempedoic acid can raise serum uric acid by competing with uric acid for renal tubular secretion via OAT2, and gout has been reported as an adverse effect. High-dose vitamin C (typically several grams per day) has a uricosuric effect that lowers serum uric acid. While this could theoretically offset bempedoic-acid-induced hyperuricemia, very high vitamin C intake also increases urinary oxalate and uric acid excretion, which can promote kidney stones in susceptible individuals. The interaction is minor and not a reason to avoid either agent.

Mechanism. Bempedoic acid inhibits renal OAT2-mediated tubular secretion of uric acid, reducing urate clearance and raising serum levels. High-dose vitamin C has an opposing uricosuric action but increases urinary urate and oxalate load. The two interact only at the level of renal urate handling, not through hepatic metabolism.

Recommendation. Normal dietary or low-dose supplemental vitamin C is fine with bempedoic acid. If you take gram-level vitamin C and have gout, hyperuricemia, or a history of kidney stones, discuss this with your clinician, since both bempedoic acid (raising uric acid) and high-dose vitamin C (increasing urinary uric acid/oxalate) act on renal urate handling. Periodic uric acid monitoring is reasonable while on bempedoic acid.

Stack Score

How it moves the number.

Effect on the composite score

If both Bempedoic Acid and Vitamin C are in the same stack, this pair applies −5 to your Stack Score (per scored caution row).

The full algorithm, the clamping rules, and four worked stacks are at /methodology/stack-score.

Sources

Sources, by evidence tier.

Every claim on this page is cited. PMIDs link straight to PubMed.

Reference material

2
  • 1Nissen SE, et al. Bempedoic Acid and Cardiovascular Outcomes in Statin-Intolerant Patients (CLEAR Outcomes). N Engl J Med. 2023.Needs sourceNo link
  • 2Huang HY, et al. The effects of vitamin C supplementation on serum concentrations of uric acid: a systematic review and meta-analysis of randomized controlled trials. Arthritis Rheum. 2005.Needs sourceNo link

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