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Drug interactions

Dextroamphetamine + Diamorphine

Severity: Minor

Dextroamphetamine and Diamorphine: 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

Diamorphine is a sedating opioid and dextroamphetamine a stimulant. The stimulant may mask sedation but does not reverse respiratory depression. Together they can also strain the cardiovascular system, particularly in recreational use.

What this interaction means in plain words

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

Evidence level: Low

Why it happens

Opposing CNS pharmacodynamic effects; the interaction is poorly characterized.

What to do

Monitor respiratory rate and sedation and do not use stimulant alertness as a guide to opioid safety.

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 Dextroamphetamine with Diamorphine?

MediHelp rates the interaction as minor. Dextroamphetamine and Diamorphine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Diamorphine is a sedating opioid and dextroamphetamine a stimulant. The stimulant may mask sedation but does not reverse respiratory depression. Together they can also strain the cardiovascular system, particularly in recreational use.

How serious is the interaction between Dextroamphetamine and Diamorphine?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor respiratory rate and sedation and do not use stimulant alertness as a guide to opioid safety.

What other medicines interact with Dextroamphetamine?

MediHelp also lists interactions of Dextroamphetamine with, for example, Isocarboxazid, Linezolid, Methylene blue. The full list is on the Dextroamphetamine page.

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

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