Drug interactions
Isocarboxazid + Oxymorphone
Severity: Contraindicated
Isocarboxazid and Oxymorphone: contraindicated 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
Opioids given with MAO inhibitors have been associated with serious reactions, including hypotension, CNS depression and in some cases serotonin-like toxicity with hyperthermia and agitation. Labeling advises against use during or within 14 days of MAOI therapy.
What this interaction means in plain words
Isocarboxazid and Oxymorphone are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.
Isocarboxazid belongs to Central Nervous System; Oxymorphone belongs to Musculoskeletal.
Why it happens
MAO inhibition potentiates opioid CNS effects and may cause serotonergic or autonomic toxicity; the exact mechanism varies by opioid.
What to do
Do not use oxymorphone during or within 14 days after stopping isocarboxazid. Choose a non-opioid or alternative analgesic strategy.
What to ask your pharmacist
- Is there an alternative to one of these two medicines for me?
- If both are essential, who is monitoring me and how often?
- Which symptoms mean I should stop and seek help straight away?
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Other interactions of Oxymorphone
- Alvimopan + Oxymorphone Contraindicated
- Ethanol + Oxymorphone Contraindicated
- Olanzapine / samidorphan + Oxymorphone Contraindicated
- Oxymorphone + Phenelzine Contraindicated
- Oxymorphone + Selegiline transdermal Contraindicated
- Oxymorphone + Sodium oxybate Contraindicated
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 Oxymorphone?
MediHelp rates the interaction as contraindicated. Isocarboxazid and Oxymorphone are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Opioids given with MAO inhibitors have been associated with serious reactions, including hypotension, CNS depression and in some cases serotonin-like toxicity with hyperthermia and agitation. Labeling advises against use during or within 14 days of MAOI therapy.
How serious is the interaction between Isocarboxazid and Oxymorphone?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Do not use oxymorphone during or within 14 days after stopping isocarboxazid. Choose a non-opioid or alternative analgesic strategy.
What other medicines interact with Oxymorphone?
MediHelp also lists interactions of Oxymorphone with, for example, Alvimopan, Ethanol, Olanzapine / samidorphan. The full list is on the Oxymorphone page.
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