Expert Consensus Score
Berberine
Moderate Consensus
out of 5
Based on 12 videos across 5 experts · Updated 2026-03-19
Expert Positions
The Verdict
Berberine is a polarizing supplement among the 5 experts. Attia uses it clinically for LDL management in select patients but prefers metformin for glucose control. Huberman mentions it as a glucose disposal agent but personally avoids it for longevity. Hyman views it positively as an AMPK activator and gut antimicrobial. Patrick and Johnson have no direct coverage.
Quick Protocol
Dosage
500-1500mg per day, typically divided into 2-3 doses (commonly 500mg per dose). No specific dosage consensus among the 5 experts — Attia uses it empirically and adjusts based on patient response.
Form
Berberine HCl is the most common form. Attia recommends Thorne brand specifically for pharmaceutical-grade quality. Berberine is also found in goldenseal, Oregon grape, and barberry root extracts.
Timing
Take with meals to reduce GI side effects and align with its glucose-lowering mechanism. When used as a glucose disposal agent, take shortly before or with a carbohydrate-containing meal (Huberman context).
Key Findings
- Berberine is a weak AMPK activator, similar to metformin, that helps decrease hepatic glucose output (Attia).
- Berberine also acts as a weak PCSK9 inhibitor — it can significantly improve LDL clearance in patients who overexpress the PCSK9 enzyme (Attia).
- Berberine can potently lower blood glucose, but carries real risks of hypoglycemia — it should be used cautiously as a glucose disposal agent (Huberman).
- Specific compounds including berberine can activate AMPK and downstream longevity pathways like FOXO and PGC1 to combat inflammation and oxidative stress (Hyman).
+ 4 more findings in the full report
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