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Drug interactions

Linezolid + Metformin-sitagliptin

Severity: Moderate

Linezolid and Metformin-sitagliptin: moderate 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

Linezolid, a weak MAO inhibitor, has been associated with hypoglycemia in patients receiving antidiabetic drugs, mainly insulin and oral secretagogues. It has also been linked with lactic acidosis, which may be of concern alongside metformin.

What this interaction means in plain words

Linezolid and Metformin-sitagliptin can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.

Linezolid belongs to Anti Bacterial; Metformin-sitagliptin belongs to Endocrine.

Evidence level: Low

Why it happens

Linezolid may enhance insulin action, and its mitochondrial toxicity can contribute to lactic acidosis, additive to the metformin risk.

What to do

Monitor blood glucose during linezolid therapy and watch for signs of lactic acidosis such as malaise, hyperventilation or abdominal pain; stop metformin if lactic acidosis is suspected.

What to ask your pharmacist

  • Should I take them at different times of day?
  • Does the dose of either medicine need to change?
  • Is there anything I should avoid, such as alcohol or certain foods, while on both?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Linezolid with Metformin-sitagliptin?

MediHelp rates the interaction as moderate. Linezolid and Metformin-sitagliptin can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Linezolid, a weak MAO inhibitor, has been associated with hypoglycemia in patients receiving antidiabetic drugs, mainly insulin and oral secretagogues. It has also been linked with lactic acidosis, which may be of concern alongside metformin.

How serious is the interaction between Linezolid and Metformin-sitagliptin?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood glucose during linezolid therapy and watch for signs of lactic acidosis such as malaise, hyperventilation or abdominal pain; stop metformin if lactic acidosis is suspected.

What other medicines interact with Metformin-sitagliptin?

MediHelp also lists interactions of Metformin-sitagliptin with, for example, Clozapine, Contrast media, Diatrizoate meglumine / diatrizoate. The full list is on the Metformin-sitagliptin page.

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