Supplement · Brain health technique
Berberine
Evidence grade: Context Dependent

A plant alkaloid extracted from barberry and other herbs that activates AMPK, improving glucose and lipid metabolism. Acts similarly to metformin but through different cellular pathways.
- Practice
- Supplement
- Principle
- Nourishment
- Tactic
- Metabolic & Mitochondrial Enhancers
- Health domains
- metabolic, vascular
- Evidence grade
- Context Dependent
- Strength of evidence
- Medium
- Cost
- High
- Effort
- Low
- Time commitment
- Low
How to practice Berberine
Typical dose is 500 mg 2–3× daily with meals. Start once daily to gauge tolerance. Combine with lifestyle changes (diet, exercise). Avoid if pregnant or using prescription glucose-lowering drugs without medical guidance. May slightly lower blood pressure and LDL (acts as a mild PCSK9 inhibitor). Choose third-party-tested supplements to avoid contamination.
The evidence behind Berberine
Berberine lowers blood glucose, insulin, and triglycerides by enhancing cellular energy sensing. Multiple RCTs in diabetics and metabolic syndrome show comparable (but lesser) effects to metformin on A1C and cholesterol. Animal data suggest neuroprotective benefits via reduced inflammation and amyloid formation, but human brain data are limited. GI upset and interaction with medications (especially for diabetes) are possible.
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