Drug interactions
Diatrizoate + Metformin
Severity: Major
Diatrizoate and Metformin: major interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Intravascular iodinated contrast can cause acute kidney injury, which reduces metformin clearance and may lead to metformin accumulation and lactic acidosis. The risk is greatest with impaired renal function or intra-arterial administration.
What this interaction means in plain words
Diatrizoate and Metformin can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Contrast-induced decline in renal function reduces metformin elimination, leading to accumulation.
What to do
In patients with eGFR below 30, or with acute kidney injury or intra-arterial contrast, withhold metformin at the time of the procedure and for 48 hours afterward. Restart only after renal function has been re-evaluated and found stable.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Metformin
Frequently asked questions
Can I take Diatrizoate with Metformin?
MediHelp rates the interaction as major. Diatrizoate and Metformin can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Intravascular iodinated contrast can cause acute kidney injury, which reduces metformin clearance and may lead to metformin accumulation and lactic acidosis. The risk is greatest with impaired renal function or intra-arterial administration.
How serious is the interaction between Diatrizoate and Metformin?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: In patients with eGFR below 30, or with acute kidney injury or intra-arterial contrast, withhold metformin at the time of the procedure and for 48 hours afterward. Restart only after renal function has been re-evaluated and found stable.
What other medicines interact with Metformin?
MediHelp also lists interactions of Metformin with, for example, Contrast media, Diatrizoate meglumine / diatrizoate, Ethanol. The full list is on the Metformin page.
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