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Head-to-head evidence comparison — which supplement is right for you?
Berberine vs Niacin: they're closely matched on evidence (7.5 vs 6/10); they're alternatives for inflammation-related symptoms — the best pick depends on your goals. Take the 60-second quiz for a pick tailored to your goals.
Berberine and Niacin are closely matched across evidence, studies, and safety.
Verdict
Likely helps
8 of 8 studies with measurable effects showed benefit.
Top outcomes
Verdict
Probably helps
6 of 11 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (1)
Outcomes where both Berberine and Niacin have evidence — compare verdict strength side-by-side.
500mg 2-3x daily (1000-1500mg total)
With meals, Split into 2-3 doses
Berberine HCl capsules
500-2000mg daily for lipid effects; 50-500mg for general health (the cited trials used 1,500 to 2,000 mg a day, none used 50 to 500 mg)
With food (reduces flush), Evening for lipid effects, Split doses for high amounts
Immediate-release niacin (nicotinic acid)
and 3 more not shown
4-12 weeks
8-12 weeks
First 2 weeks
If on diabetes medications
4-8 weeks
4-8 weeks
30-60 minutes after dose
Clinical Efficacy of Curcumin, Resveratrol, Silymarin, and Berberine on Cardio-Metabolic Risk Factors Among Patients With Type 2 Diabetes Mellitus: A Systemic Review and Bayesian Network Meta-Analysis
Phytotherapy research : PTR (2025) · Meta analysis · n=1337
For HbA1c, silymarin was more effective than resveratrol (MD -2.08, 95%Cl -3.50 to -0.72) (P < 0.05).
Effects of berberine and barberry on selected inflammatory biomarkers in adults: A systematic review and dose-response meta-analysis of randomized clinical trials
Phytotherapy research : PTR (2023) · Meta analysis · n=1600
In addition, the non-linear analysis showed a significant lowering effect of berberine/barberry on IL-6 and TNF-α levels in doses <1000 mg/day and less than 5 weeks of intervention.
Berberine Ursodeoxycholate for the Treatment of Type 2 Diabetes: A Randomized Clinical Trial
JAMA network open (2025) · Rct · n=113
The study included 113 patients with T2D (mean [SD] age, 54.3 [10.6] years; 72 male [63.7%]) who were randomized.
Niacin for primary and secondary prevention of cardiovascular events
The Cochrane database of systematic reviews (2017) · Meta analysis · n=39195
23 RCTs published between 1968 and 2015 with 39,195 participants were included. The median dose of niacin was 2 g/day.
Effect of lipid-lowering therapies on lipoprotein(a) levels: a comprehensive meta-analysis of randomized controlled trials
Atherosclerosis (2025) · Meta analysis · n=145314
145,314 subjects from 147 RCTs were included.
A terminal metabolite of niacin promotes vascular inflammation and contributes to cardiovascular disease risk
Nature medicine (2024) · Cohort
In a discovery cohort of 1,162 stable cardiac patients, niacin metabolism was associated with incident major adverse cardiovascular events.
The 1,000 mg point is a placebo-controlled trial of berberine 1.0 g daily for 3 months in 116 people with type 2 diabetes, where HbA1c fell from 7.5% to 6.6% and fasting glucose fell more than on placebo (PMID 18397984). The 1,500 mg point is two trials of 500 mg three times daily: one in 36 people with new type 2 diabetes where glucose fell with no significant difference from metformin in this small pilot, with transient stomach side effects in 34.5% (PMID 18442638), and a placebo-controlled pilot in 34 people with prediabetes where HbA1c fell from 6.40% to 5.43% (PMID 37679692). No trial compared doses, so the curve is flat between them and no optimal dose is set. Lower doses were not tested for glucose in any cited trial.
AI-estimated from published studies. Interpret as directional guidance.
Both Berberine and Niacin are closely matched — the best choice depends on your specific health goals.
For inflammation-related symptoms, Berberine has a higher relevance score (70 vs 60).
No documented interaction was found in the data searched. This does not establish that this exact combination is safe.
The honest tier list — proven staples vs situational vs mostly marketing. The hub the other guides feed into.
Which supplements clash with blood thinners, thyroid meds, antibiotics & more — and what to do.
What genuinely lowers LDL/triglycerides — and why "red yeast rice" is a statin in disguise.
Berberine, inositol, magnesium vs the cinnamon/chromium hype — and the med-interaction warning.
The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.