Drug interactions
Chlorpropamide + Ofloxacin
Severity: Major
Chlorpropamide and Ofloxacin: major 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
Ofloxacin can cause severe hypoglycemia or hyperglycemia in patients taking sulfonylureas. Chlorpropamide has a long half-life, so hypoglycemia may be prolonged and may need hospital treatment.
What this interaction means in plain words
Chlorpropamide and Ofloxacin can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Chlorpropamide belongs to Endocrine; Ofloxacin belongs to Anti Bacterial.
Why it happens
Fluoroquinolones stimulate insulin release by blocking pancreatic beta-cell ATP-sensitive potassium channels, adding to the sulfonylurea effect.
What to do
Monitor blood glucose closely during ofloxacin therapy and consider reducing the sulfonylurea dose. Teach patients about hypoglycemia and use an alternative antibiotic in high-risk patients such as the elderly or those with renal impairment.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Ofloxacin
- Ofloxacin + Thioridazine Contraindicated
- Adagrasib + Ofloxacin Major
- Amiodarone + Ofloxacin Major
- Amisulpride + Ofloxacin Major
- Anagrelide + Ofloxacin Major
- Arsenic trioxide + Ofloxacin Major
Other interactions of Chlorpropamide
Frequently asked questions
Can I take Chlorpropamide with Ofloxacin?
MediHelp rates the interaction as major. Chlorpropamide and Ofloxacin can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Ofloxacin can cause severe hypoglycemia or hyperglycemia in patients taking sulfonylureas. Chlorpropamide has a long half-life, so hypoglycemia may be prolonged and may need hospital treatment.
How serious is the interaction between Chlorpropamide and Ofloxacin?
MediHelp rates it major, 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 ofloxacin therapy and consider reducing the sulfonylurea dose. Teach patients about hypoglycemia and use an alternative antibiotic in high-risk patients such as the elderly or those with renal impairment.
What other medicines interact with Ofloxacin?
MediHelp also lists interactions of Ofloxacin with, for example, Thioridazine, Adagrasib, Amiodarone. The full list is on the Ofloxacin page.
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