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Drug interactions

Aripiprazole + Diamorphine

Severity: Moderate

Aripiprazole and Diamorphine: 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

Diamorphine (heroin) is a potent opioid, and combining it with aripiprazole can add to sedation, hypotension, and respiratory depression. The risk is greater at higher opioid doses or with other depressants.

What this interaction means in plain words

Aripiprazole and Diamorphine 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.

Evidence level: Moderate

Why it happens

Additive CNS and respiratory depression from opioid agonism and antipsychotic sedative effects.

What to do

Start with low opioid doses and monitor sedation, respiratory rate, and blood pressure. Avoid adding other CNS depressants where possible.

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 Aripiprazole with Diamorphine?

MediHelp rates the interaction as moderate. Aripiprazole and Diamorphine 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. Diamorphine (heroin) is a potent opioid, and combining it with aripiprazole can add to sedation, hypotension, and respiratory depression. The risk is greater at higher opioid doses or with other depressants.

How serious is the interaction between Aripiprazole and Diamorphine?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Start with low opioid doses and monitor sedation, respiratory rate, and blood pressure. Avoid adding other CNS depressants where possible.

What other medicines interact with Aripiprazole?

MediHelp also lists interactions of Aripiprazole with, for example, Pimozide, Thioridazine, Amisulpride. The full list is on the Aripiprazole page.

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

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