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Drug interactions

Amphetamine + Epinephrine inhaled

Severity: Moderate

Amphetamine and Epinephrine inhaled: 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

Amphetamine promotes release of norepinephrine and other catecholamines, and epinephrine directly stimulates adrenergic receptors. Together they can add to increases in heart rate and blood pressure and raise the risk of arrhythmia. Systemic exposure from inhaled epinephrine is usually low, so the effect is usually modest.

What this interaction means in plain words

Amphetamine and Epinephrine inhaled 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 sympathomimetic pharmacodynamic effects through indirect (amphetamine) and direct (epinephrine) adrenergic stimulation.

What to do

Monitor heart rate and blood pressure, especially when starting treatment or when epinephrine is used repeatedly. Limit epinephrine dosing to the recommended amount and review patients with cardiovascular disease.

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 Amphetamine with Epinephrine inhaled?

MediHelp rates the interaction as moderate. Amphetamine and Epinephrine inhaled 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. Amphetamine promotes release of norepinephrine and other catecholamines, and epinephrine directly stimulates adrenergic receptors. Together they can add to increases in heart rate and blood pressure and raise the risk of arrhythmia. Systemic exposure from inhaled epinephrine is usually low, so the effect is usually modest.

How serious is the interaction between Amphetamine and Epinephrine inhaled?

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 heart rate and blood pressure, especially when starting treatment or when epinephrine is used repeatedly. Limit epinephrine dosing to the recommended amount and review patients with cardiovascular disease.

What other medicines interact with Amphetamine?

MediHelp also lists interactions of Amphetamine with, for example, Iobenguane i, Ozanimod, Benzhydrocodone / acetaminophen. The full list is on the Amphetamine page.

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

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