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Drug interactions

Gliclazide + Tolmetin

Severity: Moderate

Gliclazide and Tolmetin: 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, increasing hypoglycemia risk. Evidence for tolmetin specifically is limited and derived from class effects.

What this interaction means in plain words

Gliclazide and Tolmetin 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.

Gliclazide belongs to Endocrine; Tolmetin belongs to Musculoskeletal.

Evidence level: Low

Why it happens

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

What to do

Monitor blood glucose when tolmetin is started or stopped and reduce the gliclazide 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 Gliclazide with Tolmetin?

MediHelp rates the interaction as moderate. Gliclazide and Tolmetin 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, increasing hypoglycemia risk. Evidence for tolmetin specifically is limited and derived from class effects.

How serious is the interaction between Gliclazide and Tolmetin?

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 tolmetin is started or stopped and reduce the gliclazide dose if hypoglycemia occurs.

What other medicines interact with Gliclazide?

MediHelp also lists interactions of Gliclazide with, for example, Ciprofloxacin, Clarithromycin, Disopyramide. The full list is on the Gliclazide page.

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

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