Drug interactions
Insulin regular human + Levofloxacin
Severity: Moderate
Insulin regular human and Levofloxacin: 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
Levofloxacin can disturb glucose control in insulin-treated patients, causing hypoglycemia or hyperglycemia. Severe hypoglycemia has been reported, particularly in older adults and those with reduced kidney function.
What this interaction means in plain words
Insulin regular human and Levofloxacin 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
Fluoroquinolones alter pancreatic beta-cell insulin release, producing additive glucose-lowering effects and dysglycemia.
What to do
Monitor blood glucose more often during levofloxacin therapy and adjust the insulin dose accordingly. If a hypoglycemic reaction occurs, stop levofloxacin and choose a different class of antibiotic.
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 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 Insulin regular human with Levofloxacin?
MediHelp rates the interaction as moderate. Insulin regular human and Levofloxacin 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 can disturb glucose control in insulin-treated patients, causing hypoglycemia or hyperglycemia. Severe hypoglycemia has been reported, particularly in older adults and those with reduced kidney function.
How serious is the interaction between Insulin regular human and Levofloxacin?
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 more often during levofloxacin therapy and adjust the insulin dose accordingly. If a hypoglycemic reaction occurs, stop levofloxacin and choose a different class of antibiotic.
What other medicines interact with Levofloxacin?
MediHelp also lists interactions of Levofloxacin with, for example, Dronedarone, Ibutilide, Thioridazine. The full list is on the Levofloxacin page.
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