Gil Carvalho on Berberine
4 episodes · 12 references · 2026
- Carvalho presents berberine as a well-studied supplement backed by meta-analyses showing benefits for cholesterol, blood sugar, blood pressure, and arterial plaque reduction - He highlights a typical dose of ~1 gram/day and notes mild GI side effects in 5-14% of users, with cautions for pregnant/breastfeeding women - No evidence of personal consumption; Carvalho discusses berberine purely through a research lens without indicating he takes it himself
Benefits
- Meta-analyses show berberine lowers cholesterol, fasting glucose, triglycerides, blood pressure, body weight, and reduces glucose spikes by ~18 mg/dL - 1 gram/day shown to lower Apo B by 10-15%; a 46-trial meta-analysis found A1C reduction comparable to metformin - Ultrasound studies found berberine reduced carotid artery wall thickness and specifically decreased unstable plaque morphology
Best Practices
- Clinical trial doses range from 0.3 to 1.8 grams/day, centering around ~1 gram/day - Carvalho highlights 500 mg twice daily (1 gram total) as the dose shown to lower Apo B by 10-15% - No specific timing, form, or cycling guidance discussed beyond the twice-daily split dosing protocol
Cautions
- GI distress is the most common side effect (nausea, diarrhea, constipation, gas, stomach pain), reported by 5-14% of users and usually mild - Berberine can interact with diabetes medications, potentially causing dangerously low blood glucose - Contraindicated during pregnancy and breastfeeding as berberine crosses the placenta and enters breast milk; supplement label dosages sometimes significantly mismatch advertised amounts
“Berberine is another one that's been shown in meta analyses to reduce spikes by 18 points, 18 mg per deciliter.”
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“A meta-analysis reported that berberine helped reduce the thickness of the artery wall, specifically looking at carotid arteries and ultrasound.”
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“A meta-analysis of 46 randomized control trials found that berberine helped reduce hemoglobin A1C when compared to a placebo, with an effect similar to metformin.”
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“Randomized trials and meta-analyses generally show that berberine can help lower cholesterol, fasting glucose, triglycerides, blood pressure, and body weight.”
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“The amount of berberine used in these trials is between 0.3 and 1.8 grams a day, so in that ballpark of one gram a day plus or minus 0.7.”
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