Drug interactions
Dextroamphetamine transdermal + Paroxetine
Severity: Major
Dextroamphetamine transdermal and Paroxetine: 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
Amphetamines increase serotonin release, and combining them with an SSRI raises the risk of serotonin syndrome. Paroxetine also inhibits CYP2D6, which may raise amphetamine exposure.
What this interaction means in plain words
Dextroamphetamine transdermal and Paroxetine 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 serotonergic effects, plus CYP2D6 inhibition by paroxetine reducing amphetamine clearance.
What to do
Start dextroamphetamine at a low dose and titrate slowly, monitoring for serotonin syndrome and cardiovascular effects. Stop the amphetamine and treat if serotonin toxicity occurs.
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 Paroxetine
- Isocarboxazid + Paroxetine Contraindicated
- Methylene blue + Paroxetine Contraindicated
- Paroxetine + Phenelzine Contraindicated
- Paroxetine + Pimozide Contraindicated
- Paroxetine + Procarbazine Contraindicated
- Paroxetine + Selegiline Contraindicated
Frequently asked questions
Can I take Dextroamphetamine transdermal with Paroxetine?
MediHelp rates the interaction as major. Dextroamphetamine transdermal and Paroxetine 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 increase serotonin release, and combining them with an SSRI raises the risk of serotonin syndrome. Paroxetine also inhibits CYP2D6, which may raise amphetamine exposure.
How serious is the interaction between Dextroamphetamine transdermal and Paroxetine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Start dextroamphetamine at a low dose and titrate slowly, monitoring for serotonin syndrome and cardiovascular effects. Stop the amphetamine and treat if serotonin toxicity occurs.
What other medicines interact with Paroxetine?
MediHelp also lists interactions of Paroxetine with, for example, Isocarboxazid, Methylene blue, Phenelzine. The full list is on the Paroxetine page.
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