Drug interactions
Metformin-sitagliptin + Moxifloxacin
Severity: Moderate
Metformin-sitagliptin and Moxifloxacin: 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
Fluoroquinolones can cause both hypoglycemia and hyperglycemia, particularly in older patients and those on antidiabetic drugs. Moxifloxacin carries a relatively lower risk than some other quinolones, but cases have been described.
What this interaction means in plain words
Metformin-sitagliptin and Moxifloxacin 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.
Metformin-sitagliptin belongs to Endocrine; Moxifloxacin belongs to Anti Bacterial.
Why it happens
Fluoroquinolones affect pancreatic beta-cell potassium channels, altering insulin secretion and glucose homeostasis.
What to do
Monitor blood glucose during the antibiotic course and counsel the patient on symptoms of hypo- and hyperglycemia. Stop the quinolone and switch antibiotic class if significant dysglycemia occurs.
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
Other interactions of Moxifloxacin
- Amiodarone + Moxifloxacin Contraindicated
- Arsenic trioxide + Moxifloxacin Contraindicated
- Disopyramide + Moxifloxacin Contraindicated
- Dofetilide + Moxifloxacin Contraindicated
- Dronedarone + Moxifloxacin Contraindicated
- Droperidol + Moxifloxacin Contraindicated
Frequently asked questions
Can I take Metformin-sitagliptin with Moxifloxacin?
MediHelp rates the interaction as moderate. Metformin-sitagliptin and Moxifloxacin 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. Fluoroquinolones can cause both hypoglycemia and hyperglycemia, particularly in older patients and those on antidiabetic drugs. Moxifloxacin carries a relatively lower risk than some other quinolones, but cases have been described.
How serious is the interaction between Metformin-sitagliptin and Moxifloxacin?
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 during the antibiotic course and counsel the patient on symptoms of hypo- and hyperglycemia. Stop the quinolone and switch antibiotic class if significant dysglycemia occurs.
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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