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Drug interactions

Canagliflozin-metformin + Chlorpromazine

Severity: Moderate

Canagliflozin-metformin and Chlorpromazine: 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

Chlorpromazine can impair glucose tolerance and cause hyperglycemia, reducing the effect of antidiabetic drugs. Glucose may fall again when the phenothiazine is stopped.

What this interaction means in plain words

Canagliflozin-metformin and Chlorpromazine 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.

Canagliflozin-metformin belongs to Endocrine; Chlorpromazine belongs to Central Nervous System.

Evidence level: Moderate

Why it happens

Antipsychotic-related insulin resistance and reduced insulin secretion oppose antidiabetic action.

What to do

Monitor blood glucose when starting, changing or stopping chlorpromazine and adjust antidiabetic doses as needed.

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 Canagliflozin-metformin with Chlorpromazine?

MediHelp rates the interaction as moderate. Canagliflozin-metformin and Chlorpromazine 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. Chlorpromazine can impair glucose tolerance and cause hyperglycemia, reducing the effect of antidiabetic drugs. Glucose may fall again when the phenothiazine is stopped.

How serious is the interaction between Canagliflozin-metformin and Chlorpromazine?

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 starting, changing or stopping chlorpromazine and adjust antidiabetic doses as needed.

What other medicines interact with Canagliflozin-metformin?

MediHelp also lists interactions of Canagliflozin-metformin with, for example, Contrast media, Diatrizoate, Diatrizoate meglumine / diatrizoate. The full list is on the Canagliflozin-metformin page.

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