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Drug interactions

Chlorpropamide + Oxaprozin

Severity: Moderate

Chlorpropamide and Oxaprozin: 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

NSAIDs may enhance the glucose-lowering effect of sulfonylureas, raising the risk of hypoglycemia. Chlorpropamide has a long half-life, so hypoglycemia may be prolonged.

What this interaction means in plain words

Chlorpropamide and Oxaprozin 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; Oxaprozin belongs to Musculoskeletal.

Evidence level: Low

Why it happens

Oxaprozin is highly protein bound and may displace sulfonylurea from albumin and possibly reduce its clearance, increasing free drug.

What to do

Monitor blood glucose when oxaprozin is started or stopped and teach patients to recognize hypoglycemia. Reduce the sulfonylurea dose if glucose falls.

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 Oxaprozin?

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

How serious is the interaction between Chlorpropamide and Oxaprozin?

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 when oxaprozin is started or stopped and teach patients to recognize hypoglycemia. Reduce the sulfonylurea dose if glucose falls.

What other medicines interact with Oxaprozin?

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

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

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