Drug interactions
Dextroamphetamine + Norepinephrine
Severity: Major
Dextroamphetamine and Norepinephrine: major interaction.
Last updated Sources: US FDA label
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 enhances adrenergic activity, so infused norepinephrine can produce an exaggerated pressor response with severe hypertension and arrhythmias. Chronic amphetamine use may alter responses through catecholamine depletion, making the effect less predictable.
What this interaction means in plain words
Dextroamphetamine and Norepinephrine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Additive adrenergic effects, with amphetamine-induced catecholamine release and reuptake inhibition potentiating norepinephrine.
What to do
Titrate norepinephrine carefully from a low dose with continuous blood pressure and ECG monitoring. Be prepared to reduce the infusion rate promptly.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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References
Other interactions of Dextroamphetamine
- Dextroamphetamine + Isocarboxazid Contraindicated
- Dextroamphetamine + Linezolid Contraindicated
- Dextroamphetamine + Methylene blue Contraindicated
- Dextroamphetamine + Phenelzine Contraindicated
- Dextroamphetamine + Rasagiline Contraindicated
- Dextroamphetamine + Safinamide Contraindicated
Frequently asked questions
Can I take Dextroamphetamine with Norepinephrine?
MediHelp rates the interaction as major. Dextroamphetamine and Norepinephrine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Amphetamine enhances adrenergic activity, so infused norepinephrine can produce an exaggerated pressor response with severe hypertension and arrhythmias. Chronic amphetamine use may alter responses through catecholamine depletion, making the effect less predictable.
How serious is the interaction between Dextroamphetamine and Norepinephrine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Titrate norepinephrine carefully from a low dose with continuous blood pressure and ECG monitoring. Be prepared to reduce the infusion rate promptly.
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.
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