Verdict
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500 mg of berberine two to three times a day with meals is the common dose.
No counted mention yet.
By Arun AgrahriLast reviewed 1 timecoded source
Short answer
The typical range is 500mg to 1,500mg a day, split across meals to blunt glucose spikes and reduce stomach upset. Andrew Huberman gives that range on his own show. Start at 500mg, and use medical supervision if you're on diabetes medication, because of the risk of low blood sugar.
Berberine is worth taking.
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500 mg of berberine two to three times a day with meals is the common dose.
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The typical berberine dose is 500mg to 1,500mg a day, split and taken with meals. Andrew Huberman gives that range on his own show. Split dosing matters because berberine has a short half-life. Taking it with food also blunts the post-meal glucose rise and reduces the stomach upset it is known for. Only a few sources discuss a dose at all.
Huberman describes berberine as a potent glucose-disposal agent and warns about low blood sugar. He has said he felt fine on up to a gram. Elsewhere on his show he says he does not take it, because berberine gives him brutal headaches, and that he avoids it, along with metformin and rapamycin, for longevity.
Peter Attia treats berberine as a weak AMPK activator and uses it mainly to lower LDL cholesterol (via PCSK9) rather than blood sugar. For glucose he prefers pharmaceutical metformin. He adjusts the dose by patient response. Berberine is also framed as an AMPK-activating anti-aging tool and a gut antimicrobial.
Start at 500mg once daily with your largest meal to check tolerance, then build up with meals. Because berberine lowers blood glucose, anyone on diabetes medication should use it only under medical supervision. The popular 'nature's metformin' label oversells it; our berberine vs metformin breakdown explains why.
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