Drug interactions
Linagliptin-metformin + Rifampin
Severity: Major
Linagliptin-metformin and Rifampin: 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
Rifampin strongly induces CYP3A4 and P-glycoprotein, which markedly lowers linagliptin exposure and may cause loss of glycemic control. Rifampin may also alter metformin exposure through effects on organic cation transporters.
What this interaction means in plain words
Linagliptin-metformin and Rifampin 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
Induction of CYP3A4 and P-glycoprotein by rifampin increases linagliptin clearance and reduces its bioavailability.
What to do
Avoid the combination where possible and use an alternative glucose-lowering agent during rifampin therapy. If it is unavoidable, monitor glucose closely and adjust the regimen.
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 Linagliptin-metformin
Frequently asked questions
Can I take Linagliptin-metformin with Rifampin?
MediHelp rates the interaction as major. Linagliptin-metformin and Rifampin 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. Rifampin strongly induces CYP3A4 and P-glycoprotein, which markedly lowers linagliptin exposure and may cause loss of glycemic control. Rifampin may also alter metformin exposure through effects on organic cation transporters.
How serious is the interaction between Linagliptin-metformin and Rifampin?
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 the combination where possible and use an alternative glucose-lowering agent during rifampin therapy. If it is unavoidable, monitor glucose closely and adjust the regimen.
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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