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Moderate· moderate-evidence
May be possible under supervision — talk to your prescriber or pharmacist before combining.
Black seed has blood sugar-lowering properties that may be additive with metformin.
Thymoquinone improves insulin sensitivity and may enhance pancreatic beta-cell function.
Source: Clinical Studies · Reviewed April 2026
Black Seed + Metformin: use caution. May be possible under supervision — talk to your prescriber or pharmacist before combining. Black seed has blood sugar-lowering properties that may be additive with metformin.
Thymoquinone improves insulin sensitivity and may enhance pancreatic beta-cell function.
Do not stop either abruptly on your own. Talk to your prescriber or pharmacist promptly — bring this page to your appointment.
Educational information only — not medical advice. Always verify with a healthcare professional.