NutriStack
Chromium and Glyburide, a caution.
Chromium and glyburide both lower blood glucose by different mechanisms. Glyburide is the longest-acting sulfonylurea on the US market and already carries the highest hypoglycemia risk in its class. Adding chromium, which improves insulin sensitivity, can produce prolonged hypoglycemia (especially overnight) in older adults and in anyone with reduced kidney function.
One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
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What the row says.
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At a glance
- Pair type
- Caution
- Evidence (highest tier)
- Moderate
- Source citations
- 2 sources
- Stack Score effect
- −5 to your Stack Score (per scored caution row).
- Scope
- Supplement × Prescription
- Last verified
- May 30, 2026
Caution · Moderate evidence
Caution
What is happening. Chromium and glyburide both lower blood glucose by different mechanisms. Glyburide is the longest-acting sulfonylurea on the US market and already carries the highest hypoglycemia risk in its class. Adding chromium, which improves insulin sensitivity, can produce prolonged hypoglycemia (especially overnight) in older adults and in anyone with reduced kidney function.
Mechanism. Chromium amplifies insulin receptor signaling and GLUT4 translocation in muscle, while glyburide closes pancreatic beta-cell K-ATP channels to force insulin secretion. The combined effect lowers glucose more than either alone. Glyburide's active metabolites also accumulate in renal impairment, prolonging the hypoglycemic effect.
Recommendation. Avoid starting chromium on glyburide unless your prescriber agrees. If you do combine them, monitor fasting and bedtime glucose closely for the first month and ask whether glyburide should be reduced or switched to a shorter-acting sulfonylurea.
Sources (2)
- Singer GM, Geohas J. The effect of chromium picolinate and biotin supplementation on glycemic control in poorly controlled patients with type 2 diabetes mellitus: a placebo-controlled, double-blinded, randomized trial. Diabetes Technol Ther. 2006;8(6):636-43. PMID 17109595
- Havel PJ. A scientific review: the role of chromium in insulin resistance. Diabetes Educ. 2004;Suppl:2-14. PMID 15208835
Stack Score
How this pair moves the number.
Effect on the composite score
If both Chromium and Glyburide are in the same stack, this pair applies −5 to your Stack Score (per scored caution row).
The full algorithm, the clamping rules, and four worked stacks are documented at /methodology/stack-score.
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