Berberine is a plant compound taken by mouth for blood-sugar and cholesterol control, where its effects are strongest and most repeatedly shown, resembling some standard drugs over a few months. Benefits for fatty liver, insulin resistance, and inflammation are modest, and weight loss is small. Claims about slowing aging stay unproven. Main cautions: digestive upset and altering other medicines' levels. (Full Review)
| Marker | Target | Why |
|---|---|---|
| Fasting glucose | 70–85 mg/dL | Tracks the core glucose-lowering effect |
| HbA1c | Below 5.4% | Average blood sugar over ~3 months |
| Fasting insulin / HOMA-IR | Insulin ~2–5 µIU/mL; HOMA-IR below 1.0 | Detects insulin resistance and its improvement |
| Lipid panel with ApoB | ApoB below 80 mg/dL; triglycerides below 80 mg/dL | Captures the cholesterol and triglyceride response |
| ALT / AST | ALT below 25 U/L | Monitors liver effects, benefit and rare enzyme rises |
| Total bilirubin | 0.3–1.2 mg/dL | Bilirubin-related safety check |
| hs-CRP | Below 1.0 mg/L (optimal below 0.5) | Tracks systemic inflammation |
| Creatinine / eGFR | eGFR above 90 mL/min/1.73m² | Confirms kidney function for safe long-term use |
Cadence: Baseline before the first dose; first metabolic re-check at 8–12 weeks; then every 3–6 months during continued use, with liver and kidney function reviewed at least annually.