Drug interactions
Metformin + Trilaciclib
Severity: Major
Metformin and Trilaciclib: 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
Trilaciclib inhibits renal transporters involved in metformin elimination and can raise metformin exposure. This increases the risk of metformin toxicity, including lactic acidosis.
What this interaction means in plain words
Metformin and Trilaciclib 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.
Metformin belongs to Endocrine; Trilaciclib belongs to Oncology.
Why it happens
Trilaciclib inhibits OCT2, MATE1 and MATE2-K, decreasing renal secretion of metformin.
What to do
Avoid metformin on the days of trilaciclib administration if possible, or monitor closely for lactic acidosis and adjust metformin dose. Check renal function beforehand.
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
Other interactions of Trilaciclib
Frequently asked questions
Can I take Metformin with Trilaciclib?
MediHelp rates the interaction as major. Metformin and Trilaciclib 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. Trilaciclib inhibits renal transporters involved in metformin elimination and can raise metformin exposure. This increases the risk of metformin toxicity, including lactic acidosis.
How serious is the interaction between Metformin and Trilaciclib?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid metformin on the days of trilaciclib administration if possible, or monitor closely for lactic acidosis and adjust metformin dose. Check renal function beforehand.
What other medicines interact with Metformin?
MediHelp also lists interactions of Metformin with, for example, Contrast media, Diatrizoate meglumine / diatrizoate, Diatrizoate. The full list is on the Metformin page.
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