Supplements for blood sugar control

Berberine 500 mg three times daily reduces HbA1c by ~0.7% in trials — comparable to low-dose metformin. Myo-inositol restores ovulation and improves insulin sensitivity in PCOS. Alpha-lipoic acid has neuropathy and modest glucose data. Cinnamon (Ceylon) has small, inconsistent effects. Bitter melon, gymnema, and fenugreek have limited evidence. CRITICAL: combining glucose-lowering supplements with insulin or sulfonylureas raises hypoglycemia risk substantially — adjust meds only with your prescriber.