Drug interactions
Dextroamphetamine + Iobenguane i
Severity: Major
Dextroamphetamine and Iobenguane i: major 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
Amphetamines interfere with uptake of iobenguane into adrenergic nerve terminals and tumor cells. This can reduce tracer uptake and produce false-negative imaging or reduced therapeutic effect.
What this interaction means in plain words
Dextroamphetamine and Iobenguane i 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
Amphetamines compete for the norepinephrine transporter and displace or block the uptake of iobenguane.
What to do
Withhold dextroamphetamine for several half-lives before iobenguane administration, in line with product labeling, if clinically feasible, and confirm timing with nuclear medicine.
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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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 Iobenguane i?
MediHelp rates the interaction as major. Dextroamphetamine and Iobenguane i 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. Amphetamines interfere with uptake of iobenguane into adrenergic nerve terminals and tumor cells. This can reduce tracer uptake and produce false-negative imaging or reduced therapeutic effect.
How serious is the interaction between Dextroamphetamine and Iobenguane i?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Withhold dextroamphetamine for several half-lives before iobenguane administration, in line with product labeling, if clinically feasible, and confirm timing with nuclear medicine.
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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