Drug interactions
Metformin-sitagliptin + Quinapril
Severity: Moderate
Metformin-sitagliptin and Quinapril: 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
ACE inhibitors can enhance insulin sensitivity and occasionally cause hypoglycemia in patients on antidiabetic drugs. They may also cause renal function decline or hyperkalemia, which increases metformin accumulation and lactic acidosis risk; ACE inhibitors also raise angioedema risk with sitagliptin.
What this interaction means in plain words
Metformin-sitagliptin and Quinapril 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
ACE inhibition improves insulin sensitivity and may reduce renal function, raising metformin exposure; both ACE inhibitors and DPP-4 inhibitors impair bradykinin or substance P breakdown.
What to do
Monitor glucose, renal function and potassium, especially after starting or changing doses. Counsel patients to report facial or lip swelling.
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 Metformin-sitagliptin
Frequently asked questions
Can I take Metformin-sitagliptin with Quinapril?
MediHelp rates the interaction as moderate. Metformin-sitagliptin and Quinapril 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. ACE inhibitors can enhance insulin sensitivity and occasionally cause hypoglycemia in patients on antidiabetic drugs. They may also cause renal function decline or hyperkalemia, which increases metformin accumulation and lactic acidosis risk; ACE inhibitors also raise angioedema risk with sitagliptin.
How serious is the interaction between Metformin-sitagliptin and Quinapril?
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 glucose, renal function and potassium, especially after starting or changing doses. Counsel patients to report facial or lip swelling.
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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