Berberine + Ceylon cinnamon combo

Tier 3 — weak evidence · Glucose · Metabolic · Insulin

A popular blood sugar support combination sold by many supplement brands. Berberine has strong evidence on its own and cinnamon has modest evidence on its own, but no trials have tested whether combining them actually adds any benefit over berberine by itself. You may be paying extra for an unproven combination. Try berberine alone first.

Dose: 500 mg berberine + 1,000 mg Ceylon cinnamon × 2 daily; combination not specifically validated