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Drug interactions

Iloperidone + Tolazamide

Severity: Moderate

Iloperidone and Tolazamide: 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

Atypical antipsychotics can worsen glycemic control and may cause hyperglycemia or new-onset diabetes. This can counteract tolazamide and lead to loss of glucose control.

What this interaction means in plain words

Iloperidone and Tolazamide 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.

Iloperidone belongs to Central Nervous System; Tolazamide belongs to Endocrine.

Evidence level: Moderate

Why it happens

Antipsychotic-related insulin resistance and metabolic effects oppose the hypoglycemic action of the sulfonylurea.

What to do

Monitor fasting glucose and HbA1c after starting iloperidone. Titrate tolazamide or add other therapy if control worsens.

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 Iloperidone with Tolazamide?

MediHelp rates the interaction as moderate. Iloperidone and Tolazamide 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. Atypical antipsychotics can worsen glycemic control and may cause hyperglycemia or new-onset diabetes. This can counteract tolazamide and lead to loss of glucose control.

How serious is the interaction between Iloperidone and Tolazamide?

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 fasting glucose and HbA1c after starting iloperidone. Titrate tolazamide or add other therapy if control worsens.

What other medicines interact with Tolazamide?

MediHelp also lists interactions of Tolazamide with, for example, Disopyramide, Insulin degludec-liraglutide, Aceclofenac. The full list is on the Tolazamide page.

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

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