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Does Epinephrine Interact with Labetalol?

Epinephrine and Labetalol have a major drug interaction according to U.S. FDA drug labeling data. Patients taking labetalol may be unresponsive to usual epinephrine doses for treating allergic reactions, particularly those with history of severe anaphylactic reactions. The mechanism involves beta-blocker interference with epinephrine response. Patients taking both medications should consult their healthcare provider before starting, stopping, or changing the dosage of either drug. This information is based on official FDA drug labeling sourced from OpenFDA and the NIH National Library of Medicine.

Severity
Major
Epinephrine Class
alpha-Adrenergic Agonist
Labetalol Class
beta-Adrenergic Blocker
Management
Close medical supervision required
Data Source
U.S. FDA via OpenFDA

How This Interaction Works

The interaction between Epinephrine and Labetalol occurs because beta-blocker interference with epinephrine response. Clinically, this means patients taking labetalol may be unresponsive to usual epinephrine doses for treating allergic reactions, particularly those with history of severe anaphylactic reactions. This is classified as a major interaction, meaning it could cause serious harm if not properly managed. Your healthcare provider may need to adjust dosages, substitute one medication, or increase monitoring frequency.

What To Tell Your Doctor or Pharmacist

If you are taking Epinephrine and your doctor is considering prescribing Labetalol (or vice versa), make sure to:

  • Inform your doctor and pharmacist of all current medications, including over-the-counter drugs and supplements
  • Ask whether the benefits of combining these medications outweigh the risks for your specific situation
  • Ask what symptoms to watch for that would indicate the interaction is causing problems
  • Ask how frequently you should be monitored while these are co-prescribed
  • Ask whether any dosage adjustments are needed
  • Never stop or change either medication without first consulting your healthcare provider
💊 Epinephrine(Adrenalin)+💊 Labetalol(Labetalol Hydrochloride)

Severity & Interaction Details

⚠️
major
Use with caution — major interaction
Serious risk of clinically significant harm. Generally avoid; if used, monitor closely.
Severity scale
MinorContra
On record
Yes
Drug A class
alpha-Adrenergic Agonist
Drug B class
beta-Adrenergic Blocker
Source
NLP:labetalol

What this means in plain English

Patients taking labetalol may be unresponsive to usual epinephrine doses for treating allergic reactions, particularly those with history of severe anaphylactic reactions.

What the FDA label says

"Beta-blocker interference with epinephrine response"

📖 Source: NLP:labetalol

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Data sourced from U.S. FDA drug labeling via openFDA and the NIH National Library of Medicine. For informational purposes only. Always consult your pharmacist or physician.