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Drug interactions

Chlorpropamide + Indomethacin

Severity: Moderate

Chlorpropamide and Indomethacin: 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

Indomethacin may enhance the glucose-lowering effect of chlorpropamide, raising hypoglycemia risk. Chlorpropamide has a long half-life so episodes can be prolonged.

What this interaction means in plain words

Chlorpropamide and Indomethacin 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.

Chlorpropamide belongs to Endocrine; Indomethacin belongs to Musculoskeletal.

Evidence level: Low

Why it happens

Possible protein-binding displacement and prostaglandin effects on insulin secretion; the mechanism is not firmly established.

What to do

Monitor blood glucose closely when indomethacin is started or stopped and reduce the chlorpropamide dose if hypoglycemia 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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Chlorpropamide with Indomethacin?

MediHelp rates the interaction as moderate. Chlorpropamide and Indomethacin 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. Indomethacin may enhance the glucose-lowering effect of chlorpropamide, raising hypoglycemia risk. Chlorpropamide has a long half-life so episodes can be prolonged.

How serious is the interaction between Chlorpropamide and Indomethacin?

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 when indomethacin is started or stopped and reduce the chlorpropamide dose if hypoglycemia occurs.

What other medicines interact with Indomethacin?

MediHelp also lists interactions of Indomethacin with, for example, Ketorolac, Ketorolac intranasal, Aceclofenac. The full list is on the Indomethacin page.

Full monographs, dosing and an interaction checker in the MediHelp app

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