Supplement
Berberine
SaveAn isoquinoline alkaloid from plants like goldenseal and barberry that activates AMPK, with glucose- and lipid-lowering effects comparable to some pharmaceuticals.
Quick verdict
Among the most evidence-backed supplements for blood sugar and lipid management. Genuinely effective but should be treated with pharmaceutical-level respect for interactions.
Evidence score
A rough internal score reflecting quantity, quality, and consistency of human evidence. Not a clinical recommendation.
What the research shows
Meta-analyses of RCTs show HbA1c reductions comparable to metformin (~0.5–0.9%). Significant LDL and triglyceride lowering. AMPK activation is well-documented. GI side effects are the main limitation.
Benefits
- Clinically meaningful blood glucose reduction
- Lowers LDL and triglycerides
- Activates AMPK pathway
Dosage notes
500 mg 2–3 times daily with meals. Start low to assess GI tolerance.
Side effects
- GI cramping and diarrhoea
- Constipation in some users
- Potential drug interactions
Who should be cautious
Inhibits CYP3A4 and CYP2D6—significant drug interaction potential. Do not combine with metformin without medical supervision. Can cause hypoglycaemia in susceptible individuals.
What this page cannot tell you
GI tolerability limits adherence. Bioavailability is low; dihydroberberine may be better absorbed. Long-term safety data beyond 1–2 years are limited.
Leaderboard scores
- Weight loss55
- Longevity50
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