Drug interactions
Metformin + Moxifloxacin
Severity: Minor
Metformin and Moxifloxacin: minor 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 disturb glucose control, causing hypoglycemia or hyperglycemia in people with diabetes. Moxifloxacin is among the lower-risk quinolones, and metformin alone rarely causes hypoglycemia, but glucose changes remain possible.
What this interaction means in plain words
Metformin and Moxifloxacin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Metformin belongs to Endocrine; Moxifloxacin belongs to Anti Bacterial.
Why it happens
Quinolones affect pancreatic insulin secretion, which can alter the glycemic effect of antidiabetic therapy.
What to do
Advise patients to monitor blood glucose during moxifloxacin therapy and report symptoms of dysglycemia. Adjust antidiabetic therapy only if glucose changes occur.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Moxifloxacin
- Amiodarone + Moxifloxacin Contraindicated
- Arsenic trioxide + Moxifloxacin Contraindicated
- Disopyramide + Moxifloxacin Contraindicated
- Dofetilide + Moxifloxacin Contraindicated
- Dronedarone + Moxifloxacin Contraindicated
- Droperidol + Moxifloxacin Contraindicated
Other interactions of Metformin
Frequently asked questions
Can I take Metformin with Moxifloxacin?
MediHelp rates the interaction as minor. Metformin and Moxifloxacin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Fluoroquinolones can disturb glucose control, causing hypoglycemia or hyperglycemia in people with diabetes. Moxifloxacin is among the lower-risk quinolones, and metformin alone rarely causes hypoglycemia, but glucose changes remain possible.
How serious is the interaction between Metformin and Moxifloxacin?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Advise patients to monitor blood glucose during moxifloxacin therapy and report symptoms of dysglycemia. Adjust antidiabetic therapy only if glucose changes occur.
What other medicines interact with Moxifloxacin?
MediHelp also lists interactions of Moxifloxacin with, for example, Amiodarone, Arsenic trioxide, Disopyramide. The full list is on the Moxifloxacin page.
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