Skip to main content

Kalbitor Side Effects

Generic name: ecallantide

Medically reviewed by Philip Thornton, DipPharm. Last updated on Aug 22, 2023.

Note: This document contains side effect information about ecallantide. Some dosage forms listed on this page may not apply to the brand name Kalbitor.

Applies to ecallantide: subcutaneous solution.

Warning

Subcutaneous route (Solution)

Anaphylaxis has been reported after administration of ecallantide. Because of this risk, ecallantide should only be administered by a healthcare professional who is aware of the similarity of symptoms between anaphylaxis and hereditary angioedema and who has the appropriate medical support to manage both conditions. Patients should be monitored closely.

Serious side effects of Kalbitor

Along with its needed effects, ecallantide (the active ingredient contained in Kalbitor) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor or nurse immediately if any of the following side effects occur while taking ecallantide:

Less common

Other side effects of Kalbitor

Some side effects of ecallantide may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

Less common

For Healthcare Professionals

Applies to ecallantide: subcutaneous solution.

General

The most common adverse reactions were headache, nausea, diarrhea, pyrexia, injection site reactions, and nasopharyngitis.[Ref]

Dermatologic

Common (1% to 10%): Pruritus, rash, urticaria[Ref]

Gastrointestinal

Very common (10% or more): Nausea (up to 13%), diarrhea (up to 11%)

Common (1% to 10%): Vomiting, upper abdominal pain[Ref]

Hypersensitivity

Common (1% to 10%): Anaphylaxis

Frequency not reported: Hypersensitivity reactions[Ref]

Local

Common (1% to 10%): Injection site reactions[Ref]

Nervous system

Very common (10% or more): Headache (up to 16%)[Ref]

Other

Very common (10% or more): Fatigue (12%)[Ref]

Respiratory

Common (1% to 10%): Upper respiratory tract infection, nasopharyngitis[Ref]

Frequently asked questions

References

1. Product Information. Kalbitor (ecallantide). Dyax Corporation. 2009.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.