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Drug interactions

Disopyramide + Glibenclamide

Severity: Moderate

Disopyramide and Glibenclamide: 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

Disopyramide can cause hypoglycemia on its own, probably by stimulating insulin release. Combined with glyburide the risk of severe or prolonged low blood glucose is increased, particularly in older patients and in those with renal impairment.

What this interaction means in plain words

Disopyramide and Glibenclamide 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.

Disopyramide belongs to Cardiovascular; Glibenclamide belongs to Endocrine.

Evidence level: Low

Why it happens

Additive hypoglycemic effect, with disopyramide thought to enhance insulin secretion; the mechanism is not fully established.

What to do

Monitor blood glucose closely when the combination is started and lower the glyburide dose if hypoglycemia occurs. Consider an alternative antiarrhythmic in patients at high risk.

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 Disopyramide with Glibenclamide?

MediHelp rates the interaction as moderate. Disopyramide and Glibenclamide 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. Disopyramide can cause hypoglycemia on its own, probably by stimulating insulin release. Combined with glyburide the risk of severe or prolonged low blood glucose is increased, particularly in older patients and in those with renal impairment.

How serious is the interaction between Disopyramide and Glibenclamide?

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 the combination is started and lower the glyburide dose if hypoglycemia occurs. Consider an alternative antiarrhythmic in patients at high risk.

What other medicines interact with Glibenclamide?

MediHelp also lists interactions of Glibenclamide with, for example, Bosentan, Cholic acid, Ciprofloxacin. The full list is on the Glibenclamide page.

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