Which common diabetes medication may be nephrotoxic?

Which common diabetes medication may be nephrotoxic?

• A. Metformin
• B. Insulin
• C. Glyburide
• D. Acarbose

Answer: (A)

Kidney function directly influences safety with many diabetes meds because the kidneys clear or process these drugs. Metformin stands out because it is cleared by the kidneys, and when renal function is reduced, the drug can accumulate and raise the risk of lactic acidosis. Lactic acidosis is a serious condition that can worsen kidney function and overall stability, so metformin has a notable nephrotoxicity concern in patients with impaired renal function. The other common medications—insulin, glyburide, and acarbose—do not carry nephrotoxicity as a primary risk; they may require dose adjustments in kidney disease, but they do not cause kidney injury through a nephrotoxic mechanism in the way metformin can through lactic acidosis.

Kidney function directly influences safety with many diabetes meds because the kidneys clear or process these drugs. Metformin stands out because it is cleared by the kidneys, and when renal function is reduced, the drug can accumulate and raise the risk of lactic acidosis. Lactic acidosis is a serious condition that can worsen kidney function and overall stability, so metformin has a notable nephrotoxicity concern in patients with impaired renal function. The other common medications—insulin, glyburide, and acarbose—do not carry nephrotoxicity as a primary risk; they may require dose adjustments in kidney disease, but they do not cause kidney injury through a nephrotoxic mechanism in the way metformin can through lactic acidosis.