Best for Heart
Best Vitamin B3 for Heart
Top 2 products ranked · Reviewed May 2026 · 25–500 mg clinical dose
Why Vitamin B3 for Heart
Vitamin B3 plays a supporting role in heart. Available as nicotinic acid or nicotinamide (niacinamide); both support cellular energy and NAD+ synthesis, but only nicotinic acid changes lipid profiles (HDL ↑, TG ↓) — nicotinamide has zero effect on lipids. Important context for the lipid claim: the two definitive outcome trials, AIM-HIGH (2011) and HPS2-THRIVE (2014), failed to show cardiovascular mortality benefit when nicotinic acid was added to statin therapy.
What dose to look for
Clinical studies typically use 25–500 mg of vitamin b3. Common in B-complex and standalone formulations; UL 35 mg applies to flushing form only. Products below this range may not deliver meaningful results.
What the research says
Vitamin B3 has strong clinical evidence for heart benefits. Lipid effects (HDL ↑, TG ↓) are established for nicotinic acid, but AIM-HIGH and HPS2-THRIVE failed to show CV mortality benefit on top of statins and signaled +55% diabetes risk, bleeding, and infections. Niacinamide has zero lipid effect; inositol hexanicotinate is evidence-empty Learn more
Clinical research on Niacin (Vitamin B3)
MODERATE — Well-established lipid effects but disappointing outcome trials · 1,500–2,000 mg/day (extended-release)
- •Niacin is the most effective agent for raising HDL cholesterol (15–35% increase) and also lowers LDL (5–25%) and triglycerides (20–50%) at pharmacological doses.
- •AIM-HIGH trial (2011, 3,414 patients) and HPS2-THRIVE trial (2014, 25,673 patients) found niacin added to statin therapy did NOT reduce cardiovascular events — despite improving lipid panels. PubMed
- •These disappointing outcome trials led most cardiologists to abandon niacin as a cardiovascular therapy. The disconnect between lipid improvements and clinical outcomes remains poorly understood.
- •Flushing is the primary side effect. Extended-release forms reduce flushing but carry hepatotoxicity risk at high doses. No-flush niacin (inositol hexanicotinate) has minimal evidence for lipid effects.