AI recommends a common cold medication containing pseudoephedrine to a patient on a monoamine oxidase inhibitor (MAOI) like phenelzine or tranylcypromine
ID: medical/contraindicated-monoamine-oxidase-inhibitor-interaction
Version Compatibility
| Version | Status | Introduced | Deprecated | Notes |
|---|---|---|---|---|
| FDA Orange Book 2024 | active | — | — | — |
| WHO Model List of Essential Medicines 2023 | active | — | — | — |
| DrugBank 5.1.10 | active | — | — | — |
Root Cause
Pseudoephedrine is a sympathomimetic amine that, when combined with MAOIs, can precipitate a hypertensive crisis due to excessive norepinephrine release, potentially leading to stroke or myocardial infarction.
generic中文
伪麻黄碱是一种拟交感胺，与MAOI联用时，会因去甲肾上腺素过度释放而引发高血压危象，可能导致中风或心肌梗死。
Official Documentation
https://www.fda.gov/drugs/drug-interactions-labeling/drug-interactions-understanding-how-they-workWorkarounds
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95% success Always query the patient's full medication list from a reliable source (e.g., EHR) and run a drug interaction check using a tool like RxNorm or DrugBank before recommending any OTC medication.
Always query the patient's full medication list from a reliable source (e.g., EHR) and run a drug interaction check using a tool like RxNorm or DrugBank before recommending any OTC medication.
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85% success For patients on MAOIs, recommend non-pharmacologic relief for cold symptoms: saline nasal spray, steam inhalation, honey for cough, and rest. If pharmacotherapy is necessary, consult a pharmacist for safe options like dextromethorphan (with caution) or acetaminophen for fever.
For patients on MAOIs, recommend non-pharmacologic relief for cold symptoms: saline nasal spray, steam inhalation, honey for cough, and rest. If pharmacotherapy is necessary, consult a pharmacist for safe options like dextromethorphan (with caution) or acetaminophen for fever.
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90% success If pseudoephedrine is accidentally recommended, advise the patient to stop immediately and monitor blood pressure for 24 hours; seek emergency care if headache, palpitations, or chest pain occur.
If pseudoephedrine is accidentally recommended, advise the patient to stop immediately and monitor blood pressure for 24 hours; seek emergency care if headache, palpitations, or chest pain occur.
中文步骤
Always query the patient's full medication list from a reliable source (e.g., EHR) and run a drug interaction check using a tool like RxNorm or DrugBank before recommending any OTC medication.
For patients on MAOIs, recommend non-pharmacologic relief for cold symptoms: saline nasal spray, steam inhalation, honey for cough, and rest. If pharmacotherapy is necessary, consult a pharmacist for safe options like dextromethorphan (with caution) or acetaminophen for fever.
If pseudoephedrine is accidentally recommended, advise the patient to stop immediately and monitor blood pressure for 24 hours; seek emergency care if headache, palpitations, or chest pain occur.
Dead Ends
Common approaches that don't work:
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70% fail
Reversible MAOIs still carry a risk of hypertensive crisis when combined with sympathomimetics, though the risk is lower; the interaction is not negligible.
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50% fail
Topical decongestants can still be absorbed systemically, especially with prolonged use or mucosal damage, and may still interact with MAOIs.
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80% fail
Many OTC cold medications contain hidden sympathomimetics like phenylephrine or pseudoephedrine in combination with antihistamines or analgesics, which can be overlooked.