Drug interactions
Linagliptin-metformin + Methylene blue
Severity: Moderate
Linagliptin-metformin and Methylene blue: 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
Methylene blue inhibits OCT2 and MATE transporters, which may reduce metformin renal clearance and raise its levels. This could increase the risk of metformin accumulation and lactic acidosis, particularly in renal impairment.
What this interaction means in plain words
Linagliptin-metformin and Methylene blue 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.
Why it happens
Methylene blue inhibits renal OCT2 and MATE transporters involved in metformin elimination.
What to do
Monitor renal function and for signs of lactic acidosis. Consider temporarily holding metformin when methylene blue is given for acute indications, especially if renal function is reduced.
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?
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Other interactions of Linagliptin-metformin
Frequently asked questions
Can I take Linagliptin-metformin with Methylene blue?
MediHelp rates the interaction as moderate. Linagliptin-metformin and Methylene blue 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. Methylene blue inhibits OCT2 and MATE transporters, which may reduce metformin renal clearance and raise its levels. This could increase the risk of metformin accumulation and lactic acidosis, particularly in renal impairment.
How serious is the interaction between Linagliptin-metformin and Methylene blue?
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 renal function and for signs of lactic acidosis. Consider temporarily holding metformin when methylene blue is given for acute indications, especially if renal function is reduced.
What other medicines interact with Linagliptin-metformin?
MediHelp also lists interactions of Linagliptin-metformin with, for example, Apalutamide, Carbamazepine, Contrast media. The full list is on the Linagliptin-metformin page.
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