Documented concern based on cited evidence — not a personalized safety check, not medical advice, and not a decision to combine or avoid. That decision belongs with your prescriber.

Significant interaction — talk to your prescriber before combining

Significant documented interaction. Talk to your prescriber before combining these two.

Mechanism and evidence

Sulfonylureas push insulin release regardless of glucose level; berberine adds a separate glucose-lowering effect. Hypoglycemia risk is higher than with metformin monotherapy.

Evidence tier: pharmacology-standard

The tier names the strongest cited study design. Some anchors studied the supplement on its own, or a related drug in the same class — in those pairs the grade rests on that evidence plus established pharmacology, as agreed with our medical reviewer.

What to discuss with your prescriber

  • Do not start berberine while on a sulfonylurea unless your prescriber explicitly approves.
  • If approved, expect closer glucose checks; treat low-sugar symptoms as urgent.

← All reviewed pairs for Sulfonylureas (glimepiride, gliclazide, glibenclamide)