Drug interactions
Cromolyn sodium intranasal + Oxymetazoline
Severity: Minor
Cromolyn sodium intranasal and Oxymetazoline: 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
Nasal vasoconstriction from oxymetazoline may slow the absorption of another intranasal product given at the same time. Extent of absorption is not expected to change, so the effect is small.
What this interaction means in plain words
Cromolyn sodium intranasal and Oxymetazoline have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Local vasoconstriction and reduced mucosal blood flow slow the rate of absorption.
What to do
Give oxymetazoline a few minutes after cromolyn, or use it beforehand to clear congestion, and keep the doses separate.
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?
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Other interactions of Oxymetazoline
- Isocarboxazid + Oxymetazoline Major
- Oxymetazoline + Phenelzine Major
- Oxymetazoline + Tranylcypromine Major
- Amitriptyline + Oxymetazoline Moderate
- Amoxapine + Oxymetazoline Moderate
- Clomipramine + Oxymetazoline Moderate
Frequently asked questions
Can I take Cromolyn sodium intranasal with Oxymetazoline?
MediHelp rates the interaction as minor. Cromolyn sodium intranasal and Oxymetazoline have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Nasal vasoconstriction from oxymetazoline may slow the absorption of another intranasal product given at the same time. Extent of absorption is not expected to change, so the effect is small.
How serious is the interaction between Cromolyn sodium intranasal and Oxymetazoline?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Give oxymetazoline a few minutes after cromolyn, or use it beforehand to clear congestion, and keep the doses separate.
What other medicines interact with Oxymetazoline?
MediHelp also lists interactions of Oxymetazoline with, for example, Isocarboxazid, Phenelzine, Tranylcypromine. The full list is on the Oxymetazoline page.
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