Iodinated Contrast and Metformin: Drug Interaction Guide
Quick answer: This combination requires caution. Iodinated Contrast and Metformin can be used together with adjustments and monitoring.
How Iodinated Contrast interacts with Metformin
Iodinated contrast can cause acute kidney injury, which reduces metformin clearance and predisposes to lactic acidosis through accumulation.
What you should do
Withhold metformin at the time of contrast administration in patients with eGFR < 60 mL/min; recheck renal function at 48 hours before resuming.
Key facts
Severity
Moderate — caution required
Mechanism
Iodinated contrast can cause acute kidney injury, which reduces metformin clearance and predisposes to lactic acidosis t...
Action
Withhold metformin at the time of contrast administration in patients with eGFR < 60 mL/min; recheck renal function at 4...
Frequently asked questions
Can I take Iodinated Contrast and Metformin together?
With caution. Withhold metformin at the time of contrast administration in patients with eGFR < 60 mL/min; recheck renal function at 48 hours before resuming.
What is the severity of this interaction?
The interaction between Iodinated Contrast and Metformin is classified as Moderate — caution required. Iodinated contrast can cause acute kidney injury, which reduces metformin clearance and predisposes to lactic acidosis through accumulation.
What should I do if I'm prescribed both?
Withhold metformin at the time of contrast administration in patients with eGFR < 60 mL/min; recheck renal function at 48 hours before resuming. Always consult your prescribing clinician — do not stop or change medications without medical guidance.
Last reviewed: by iMedic Medical Editorial Team. Our editorial process.