Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| Alpha Lipoic Acid (ALA) | Berberine | |
|---|---|---|
| Category | Supplements | Supplements |
| Standard Dose | 300-600mg R-ALA daily | 500mg 2-3x daily (1000-1500mg total) |
| Timing | On empty stomach, 30-60 min before meals. Split doses for higher amounts. | With meals or immediately before meals (reduces postprandial glucose spike). Must be taken with food. |
| Cycle Duration | ongoing or cycle 12 weeks on, 4 weeks off | Cycle 8-12 weeks on, 4 weeks off (or continuous under practitioner supervision) |
| Evidence Level | strong_human | strong_human |
ALA is a dithiol compound that functions as a cofactor for mitochondrial alpha-keto acid dehydrogenases (pyruvate dehydrogenase, alpha-ketoglutarate dehydrogenase). Both ALA and its reduced form DHLA are potent antioxidants capable of regenerating other antioxidants including vitamin C, vitamin E, and glutathione. ALA activates AMPK, improving glucose uptake via GLUT4 translocation, and modulates NF-kB-mediated inflammatory signaling. It chelates redox-active metals (Fe2+, Cu2+).
300-600mg R-ALA daily
On empty stomach, 30-60 min before meals. Split doses for higher amounts.
ongoing or cycle 12 weeks on, 4 weeks off
Berberine activates AMP-activated protein kinase (AMPK), the master metabolic sensor, mimicking many effects of caloric restriction and exercise. It inhibits mitochondrial Complex I, increasing the AMP:ATP ratio which triggers AMPK. Downstream effects include enhanced GLUT4 translocation (glucose uptake), inhibition of HMG-CoA reductase (cholesterol synthesis), upregulation of LDL receptor expression, and suppression of PCSK9. It also modulates gut microbiome composition, increasing short-chain fatty acid-producing bacteria.
500mg 2-3x daily (1000-1500mg total)
With meals or immediately before meals (reduces postprandial glucose spike). Must be taken with food.
Cycle 8-12 weeks on, 4 weeks off (or continuous under practitioner supervision)
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