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Monograph
RESEARCH GREYP-054
Metabolic

Berberine HCl

Activates AMPK (same pathway as metformin). Improves insulin sensitivity, lowers LDL, and reduces fasting glucose. Sometimes called 'nature's metformin' — mechanistically similar but weaker.

EmergingMetabolic
Typical dose500 mg
Frequency3×/day with meals, oral
Half-life4h
Citations indexed412
DeliveryOral
Half-life~4h
EvidenceEmerging
Citations412
Similar compounds
Synergy checkCompare
Research grey

This compound sits in research-grey territory. The caveats below carry more weight than for FDA-approved entries — read them.

Mechanism

Isoquinoline alkaloid from Berberis plants. AMPK activation improves glucose uptake and inhibits hepatic gluconeogenesis. Multiple RCTs show HbA1c reductions comparable to metformin in T2DM. Emerging data on gut microbiome modulation and cancer signaling inhibition.

Specifics
Insulin sensitivityWeight / fat lossCellular aging concerns
Caveats

GI side effects (nausea, cramping, diarrhea) common at 500 mg 3×/day — start low. CYP3A4 inhibitor: interacts with cyclosporine, some statins. Poor bioavailability unless taken with food or dihydroberberine form.

Evidence levelEmerging
Regulatory statusDietary supplement (US). Prescription drug in China for T2DM.
DNA / pharmacogenomicsLow — No established pharmacogenomic signal.
Claims & evidence

Per-claim grading. Each claim is graded independently — same peptide, different claims can carry different grades.

  • CLimited evidence

    Berberine HCl — primary mechanism: activates ampk (same pathway as metformin). improves insulin sensitivity, lowers ldl, and reduces fasting glucose. sometimes called 'nature's metformin' — mechanistically similar but weaker.

    2 supporting referencesVerified 5d ago
References

External links to PubMed searches, ClinicalTrials.gov, and FDA materials. We do not host papers — we point at canonical sources.

  • PubMedEN
    REVIEWFunding undisclosedVerified 5d ago
    PubMed — Berberine T2DM HbA1c RCT
  • PubMedEN
    REVIEWFunding undisclosedVerified 5d ago
    PubMed — Berberine AMPK mechanism
RESEARCH GREYP-054

Dietary supplement (US). Prescription drug in China for T2DM.

Berberine500 mg · 3×/day with meals, oral
Discussion guide, not prescription

stack is an exploration engine. Output is a discussion guide for a conversation with a licensed provider — never a prescription, dose recommendation, or sourcing instruction. Peptides discussed include compounds with limited human evidence and varying legal status by jurisdiction. Verify everything with a qualified clinician before any decision.

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