Drug interactions
Isocarboxazid + Pirbuterol
Severity: Major
Isocarboxazid and Pirbuterol: 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
MAO inhibitors can potentiate the cardiovascular effects of sympathomimetic beta-agonists, causing hypertensive reactions, tachycardia and palpitations. The risk is higher with systemic exposure.
What this interaction means in plain words
Isocarboxazid and Pirbuterol 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
MAO inhibition increases catecholamine availability and augments adrenergic stimulation.
What to do
Avoid the combination where possible, or use an alternative bronchodilator. If used, monitor blood pressure and heart rate closely.
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 Isocarboxazid
- 5-HTP + Isocarboxazid Contraindicated
- Amitriptyline + Isocarboxazid Contraindicated
- Amobarbital + Isocarboxazid Contraindicated
- Amoxapine + Isocarboxazid Contraindicated
- Apraclonidine + Isocarboxazid Contraindicated
- Atomoxetine + Isocarboxazid Contraindicated
Frequently asked questions
Can I take Isocarboxazid with Pirbuterol?
MediHelp rates the interaction as major. Isocarboxazid and Pirbuterol 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. MAO inhibitors can potentiate the cardiovascular effects of sympathomimetic beta-agonists, causing hypertensive reactions, tachycardia and palpitations. The risk is higher with systemic exposure.
How serious is the interaction between Isocarboxazid and Pirbuterol?
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 the combination where possible, or use an alternative bronchodilator. If used, monitor blood pressure and heart rate closely.
What other medicines interact with Isocarboxazid?
MediHelp also lists interactions of Isocarboxazid with, for example, 5-HTP, Amitriptyline, Amobarbital. The full list is on the Isocarboxazid page.
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