Drug interactions
Levofloxacin + Metformin-sitagliptin
Severity: Moderate
Levofloxacin and Metformin-sitagliptin: 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 taking antidiabetic drugs. Severe hypoglycemia, including coma, has been described.
What this interaction means in plain words
Levofloxacin and Metformin-sitagliptin 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.
Levofloxacin belongs to Anti Bacterial; Metformin-sitagliptin belongs to Endocrine.
Why it happens
Fluoroquinolones affect pancreatic beta-cell potassium channels, altering insulin release, which adds to or opposes the antidiabetic effect.
What to do
Monitor blood glucose closely during the antibiotic course and educate the patient about symptoms of hypo- and hyperglycemia. Consider a non-fluoroquinolone antibiotic if glucose becomes unstable.
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 Levofloxacin
- Dronedarone + Levofloxacin Contraindicated
- Ibutilide + Levofloxacin Contraindicated
- Levofloxacin + Thioridazine Contraindicated
- Levofloxacin + Vandetanib Contraindicated
- Levofloxacin + Ziprasidone Contraindicated
- Adagrasib + Levofloxacin Major
Frequently asked questions
Can I take Levofloxacin with Metformin-sitagliptin?
MediHelp rates the interaction as moderate. Levofloxacin and Metformin-sitagliptin 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 taking antidiabetic drugs. Severe hypoglycemia, including coma, has been described.
How serious is the interaction between Levofloxacin and Metformin-sitagliptin?
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 closely during the antibiotic course and educate the patient about symptoms of hypo- and hyperglycemia. Consider a non-fluoroquinolone antibiotic if glucose becomes unstable.
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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