Drug interactions
Dextroamphetamine transdermal + Methamphetamine
Severity: Major
Dextroamphetamine transdermal and Methamphetamine: 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
Both drugs are amphetamines, so combining them duplicates therapy and increases total sympathomimetic and serotonergic load. This raises the risk of hypertension, arrhythmia, agitation and serotonin syndrome.
What this interaction means in plain words
Dextroamphetamine transdermal and Methamphetamine 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 amphetamine-induced release of monoamines including norepinephrine, dopamine and serotonin.
What to do
Avoid concurrent use and choose a single amphetamine product. If unavoidable, monitor blood pressure, heart rate and signs of serotonin syndrome.
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 Methamphetamine
- Isocarboxazid + Methamphetamine Contraindicated
- Linezolid + Methamphetamine Contraindicated
- Methamphetamine + Phenelzine Contraindicated
- Methamphetamine + Procarbazine Contraindicated
- Methamphetamine + Rasagiline Contraindicated
- Methamphetamine + Safinamide Contraindicated
Frequently asked questions
Can I take Dextroamphetamine transdermal with Methamphetamine?
MediHelp rates the interaction as major. Dextroamphetamine transdermal and Methamphetamine 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. Both drugs are amphetamines, so combining them duplicates therapy and increases total sympathomimetic and serotonergic load. This raises the risk of hypertension, arrhythmia, agitation and serotonin syndrome.
How serious is the interaction between Dextroamphetamine transdermal and Methamphetamine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid concurrent use and choose a single amphetamine product. If unavoidable, monitor blood pressure, heart rate and signs of serotonin syndrome.
What other medicines interact with Methamphetamine?
MediHelp also lists interactions of Methamphetamine with, for example, Isocarboxazid, Linezolid, Phenelzine. The full list is on the Methamphetamine page.
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