Short answer: A1C is a diagnostic blood test measuring average blood sugar over roughly three months. No dietary supplement is approved or clinically proven to lower it — meaningful change comes from diet, activity, weight management, and, when prescribed, medication.
What A1C actually measures
A1C (hemoglobin A1c) reflects average blood glucose levels over approximately the past two to three months, based on how much glucose has attached to red blood cells. It's a standard diagnostic tool used to screen for and monitor diabetes and prediabetes.
Why supplements can't claim to "lower A1C"
Making a specific claim to lower a recognized diagnostic marker for a disease is a disease-treatment claim — something dietary supplements are not permitted to claim under FDA regulations, and something that requires the kind of large-scale clinical trial evidence that individual supplement ingredients generally don't have.
What actually moves A1C, based on established research
- Sustained dietary changes — particularly reducing refined carbohydrates and increasing fiber
- Regular physical activity — improves insulin sensitivity over time
- Weight management — even modest weight loss is linked to meaningful A1C improvements in research
- Prescribed medication — when a doctor determines it's appropriate
How to actually track your A1C
A1C is measured through a blood test ordered by a doctor, typically every 3-6 months for people managing prediabetes or diabetes. This is the only reliable way to know whether your number is changing — not by how you feel while taking a supplement.
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SugarReset makes no claims about affecting A1C or diagnosing diabetes.
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See our prediabetes guide for the broader medical context.