Drug interactions
Epinephrine racemic + Pirbuterol
Severity: Moderate
Epinephrine racemic and Pirbuterol: moderate 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
Both drugs stimulate adrenergic receptors, so combined use can cause additive tachycardia, arrhythmias, hypertension and hypokalemia. Racemic epinephrine is mainly given by inhalation, but systemic absorption can still add to beta-agonist effects.
What this interaction means in plain words
Epinephrine racemic and Pirbuterol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Additive beta-adrenergic agonism with beta-2 mediated potassium shift into cells.
What to do
Monitor heart rate, rhythm and blood pressure, and check serum potassium in patients receiving repeated doses or with heart disease.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Frequently asked questions
Can I take Epinephrine racemic with Pirbuterol?
MediHelp rates the interaction as moderate. Epinephrine racemic and Pirbuterol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Both drugs stimulate adrenergic receptors, so combined use can cause additive tachycardia, arrhythmias, hypertension and hypokalemia. Racemic epinephrine is mainly given by inhalation, but systemic absorption can still add to beta-agonist effects.
How serious is the interaction between Epinephrine racemic and Pirbuterol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor heart rate, rhythm and blood pressure, and check serum potassium in patients receiving repeated doses or with heart disease.
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