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Moderate"Metformin is contraindicated at eGFR <30 due to lactic acidosis risk. Dose reduction is insufficient (B). Glyburide increases hypoglycemia risk in CKD (D). Adding metformin is unsafe (E)."Endocrinology"moderate"

A 40-year-old woman with type 2 diabetes and eGFR 28 mL/min/1.73 m² is on metformin 1,000 mg BID. What should be done?

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