Drug interactions
Dihydroergotamine intranasal + Procarbazine
Severity: Major
Dihydroergotamine intranasal and Procarbazine: 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
Procarbazine's MAO inhibition combined with intranasal dihydroergotamine may cause serotonin toxicity and excessive vasoconstriction or hypertensive reactions. Systemic absorption from the nasal route is sufficient for this to be relevant.
What this interaction means in plain words
Dihydroergotamine intranasal and Procarbazine 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 raises monoamine levels, adding to the serotonergic and vasoconstrictive effects of dihydroergotamine.
What to do
Avoid concurrent use and choose a non-serotonergic migraine therapy. If exposure occurs, monitor blood pressure and for 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 Procarbazine
- Adenovirus types 4 and 7 live + Procarbazine Contraindicated
- Amitriptyline + Procarbazine Contraindicated
- Amoxapine + Procarbazine Contraindicated
- Atomoxetine + Procarbazine Contraindicated
- Bcg vaccine live + Procarbazine Contraindicated
- Brimonidine + Procarbazine Contraindicated
Frequently asked questions
Can I take Dihydroergotamine intranasal with Procarbazine?
MediHelp rates the interaction as major. Dihydroergotamine intranasal and Procarbazine 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. Procarbazine's MAO inhibition combined with intranasal dihydroergotamine may cause serotonin toxicity and excessive vasoconstriction or hypertensive reactions. Systemic absorption from the nasal route is sufficient for this to be relevant.
How serious is the interaction between Dihydroergotamine intranasal and Procarbazine?
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 non-serotonergic migraine therapy. If exposure occurs, monitor blood pressure and for signs of serotonin syndrome.
What other medicines interact with Procarbazine?
MediHelp also lists interactions of Procarbazine with, for example, Adenovirus types 4 and 7 live, Amitriptyline, Amoxapine. The full list is on the Procarbazine page.
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