Skip to content

Drug interactions

Isoflurane + Propylhexedrine

Severity: Minor

Isoflurane and Propylhexedrine: minor 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

Propylhexedrine is an inhaled sympathomimetic decongestant that is minimally absorbed at normal use. With isoflurane, the myocardial sensitization to catecholamines could in theory promote arrhythmia or hypertension, mainly with misuse or high exposure.

What this interaction means in plain words

Isoflurane and Propylhexedrine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Isoflurane belongs to Central Nervous System; Propylhexedrine belongs to Respiratory.

Evidence level: Low

Why it happens

Sympathomimetic effect combined with volatile anesthetic myocardial sensitization to catecholamines.

What to do

Ask about propylhexedrine use, including misuse, before anesthesia. Monitor blood pressure and the ECG during the procedure.

What to ask your pharmacist

  • Is there anything I should notice while taking both?
  • Do I need to tell my doctor at the next visit?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

Pro+ members

Unlock the full page

Create an account and start a Pro+ trial to unlock the full management advice for Isoflurane and Propylhexedrine, the additional notes, the evidence detail and the whole-prescription interaction checker.

  • Full clinical management advice
  • Additional notes
  • Evidence detail
  • Interaction checker for a whole prescription

Try Pro+ free for 7 days on the web. No card needed.

Frequently asked questions

Can I take Isoflurane with Propylhexedrine?

MediHelp rates the interaction as minor. Isoflurane and Propylhexedrine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Propylhexedrine is an inhaled sympathomimetic decongestant that is minimally absorbed at normal use. With isoflurane, the myocardial sensitization to catecholamines could in theory promote arrhythmia or hypertension, mainly with misuse or high exposure.

How serious is the interaction between Isoflurane and Propylhexedrine?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Ask about propylhexedrine use, including misuse, before anesthesia. Monitor blood pressure and the ECG during the procedure.

What other medicines interact with Isoflurane?

MediHelp also lists interactions of Isoflurane with, for example, Adrenaline-articaine, Amisulpride, Arsenic trioxide. The full list is on the Isoflurane page.

Full monographs, dosing and an interaction checker in the MediHelp app

Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.

Browse A–Z · Drug interactions

Get the app Sign in