Question: is glyburide bad for your kidneys?
Answer: Glyburide use should be avoided in patients with severe kidney impairment as defined by a GFR of less than 60 mL/min (CKD stage 3 and below). Because 50 percent of the glyburide is excreted by the kidneys, the drug can build up in people with CKD, causing low blood sugar levels.