Drug interactions
Linagliptin-metformin + Ritonavir
Severity: Moderate
Linagliptin-metformin and Ritonavir: 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
Ritonavir inhibits CYP3A4 and P-glycoprotein and can raise linagliptin levels, although linagliptin has a wide safety margin. Protease inhibitors may also cause insulin resistance and hyperglycemia, which can reduce overall glycemic control.
What this interaction means in plain words
Linagliptin-metformin and Ritonavir 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.
Linagliptin-metformin belongs to Endocrine; Ritonavir belongs to Anti Virals.
Why it happens
CYP3A4 and P-gp inhibition increases linagliptin exposure, while protease inhibitor-related insulin resistance opposes the antidiabetic effect.
What to do
Monitor blood glucose regularly and adjust the antidiabetic regimen as needed. No routine linagliptin dose change is usually required.
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
Other interactions of Ritonavir
- Alfuzosin + Ritonavir Contraindicated
- Amiodarone + Ritonavir Contraindicated
- Avanafil + Ritonavir Contraindicated
- Colchicine + Ritonavir Contraindicated
- Dronedarone + Ritonavir Contraindicated
- Eletriptan + Ritonavir Contraindicated
Frequently asked questions
Can I take Linagliptin-metformin with Ritonavir?
MediHelp rates the interaction as moderate. Linagliptin-metformin and Ritonavir 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. Ritonavir inhibits CYP3A4 and P-glycoprotein and can raise linagliptin levels, although linagliptin has a wide safety margin. Protease inhibitors may also cause insulin resistance and hyperglycemia, which can reduce overall glycemic control.
How serious is the interaction between Linagliptin-metformin and Ritonavir?
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 regularly and adjust the antidiabetic regimen as needed. No routine linagliptin dose change is usually required.
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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