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Drug interactions

Insulin glargine + Sulphasalazine

Severity: Minor

Insulin glargine and Sulphasalazine: minor 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

Large salicylate doses can lower blood glucose, but the salicylate exposure from sulfasalazine is low. Sulfonamides can rarely cause hypoglycemia, so an additive effect is possible but unlikely.

What this interaction means in plain words

Insulin glargine and Sulphasalazine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Insulin glargine belongs to Endocrine; Sulphasalazine belongs to Gastrointestinal Tract.

Evidence level: Low

Why it happens

Theoretical additive glucose lowering from salicylate or sulfonamide effects.

What to do

Counsel patients on hypoglycemia symptoms and check glucose when starting or stopping sulfasalazine.

What to ask your pharmacist

  • Is there anything I should notice while taking both?
  • Do I need to tell my doctor at the next visit?

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 Insulin glargine with Sulphasalazine?

MediHelp rates the interaction as minor. Insulin glargine and Sulphasalazine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Large salicylate doses can lower blood glucose, but the salicylate exposure from sulfasalazine is low. Sulfonamides can rarely cause hypoglycemia, so an additive effect is possible but unlikely.

How serious is the interaction between Insulin glargine and Sulphasalazine?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Counsel patients on hypoglycemia symptoms and check glucose when starting or stopping sulfasalazine.

What other medicines interact with Sulphasalazine?

MediHelp also lists interactions of Sulphasalazine with, for example, Deferiprone, Pexidartinib, Sepiapterin. The full list is on the Sulphasalazine page.

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

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