Acute attacks
Sudden attacks of hereditary angioedema.
Clinical trials
Studies that evaluate the effectiveness and safety of medications or medical devices before they are approved for use by the general public.
Ecallantide (e-KAL-lan-tide)
A protein made in yeast cells; ecallantide is the active ingredient in KALBITOR (ecallantide).
HAE
Abbreviation for hereditary angioedema.
Hereditary Angioedema
A rare, hereditary disease of the immune system that causes attacks of sudden swelling in various parts of the body.
KALBITOR Access®
KALBITOR Access is a program that provides support services to hereditary angioedema patients, healthcare professionals and caregivers. KALBITOR Access services include health insurance coordination, financial assistance for qualified patients, and treatment location set up.
KALBITOR CareSM
KALBITOR Care is a program offered by Dyax Corp. that provides comprehensive support services for KALBITOR patients. Available 24 hours a day, 7 days a week, KALBITOR Care offers a complete array of patient services and resources, along with the support of healthcare professionals.
KALBITOR Home Infusion ServicesSM
KALBITOR Home Infusion Services is a program in which an experienced infusion nurse will administer your subcutaneous KALBITOR treatment in the comfort of your own home. This professional service is available to HAE patients, 16 years of age or older, who use KALBITOR to treat their sudden HAE attacks on demand. KALBITOR Home Infusion Services is not appropriate for treating laryngeal attacks.
KALBITOR® (KAL-bit-or)
A prescription medicine used to treat sudden attacks of hereditary angioedema in patients 16 years of age and older. KALBITOR® is not a cure for HAE.
Laryngeal attack
An HAE attack that affects the larynx (throat); this can block or close the airway, leading to difficulty breathing and, potentially, death.
Larynx
The part of the throat that contains the vocal cords and is used for breathing, swallowing, and talking.
On-demand treatment
On-demand HAE treatment is used to treat sudden attacks of HAE as they occur, in order to relieve symptoms associated with the attack. On-demand treatment is not used to prevent attacks from occurring.
Plasma kallikrein (kal'i-kre'in)
A protein in the body that triggers the release of a substance that may lead to hereditary angioedema attack symptoms.
Subcutaneous
Under the skin.
Trigger
In hereditary angioedema, something that causes an attack.
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Should I just wait this attack out?

When your patients have acute HAE attacks, this may be their first question. With the help of KALBITOR CareSM, an effective on-demand treatment is available.

Please see Full Prescribing Information, including Boxed Warning and Medication Guide.

Dosing & Administration

The recommended dose of KALBITOR®(ecallantide) is 30 mg (3 mL) administered subcutaneously in three 10 mg (1 mL) injections.12 If the attack persists, an additional dose of 30 mg may be administered within a 24-hour period.12

KALBITOR Dosage Form and Strength12

KALBITOR is a clear, colorless liquid free of preservatives. Each vial of KALBITOR contains ecallantide at a concentration of 10 mg/mL.

KALBITOR Administration12

KALBITOR should only be administered by a healthcare professional with appropriate medical support to manage anaphylaxis and hereditary angioedema.

KALBITOR should be refrigerated and protected from the light. KALBITOR is a clear, colorless liquid; visually inspect each vial for particulate matter and discoloration prior to administration. If there is particulate matter or discoloration, the vial should not be used.

  • Using aseptic technique, withdraw 1 mL (10 mg) of KALBITOR from the vial using a large bore needle.
  • Change the needle on the syringe to a needle suitable for subcutaneous injection. The recommended needle size is 27 gauge.
  • Inject KALBITOR into the skin of the abdomen, thigh, or upper arm. Repeat the procedure for each of the three vials comprising the KALBITOR dose.
  • The injection site for each of the injections may be in the same or in different anatomic locations (abdomen, thigh, or upper arm). There is no need for site rotation. Injection sites should be separated by at least 2 inches (5 cm) and away from the anatomical site of attack.
  • The same instructions apply to an additional dose administered within 24 hours. Different injection sites or the same anatomical location (as used for the first administration) may be used.

Please see Storage and Handling for important drug information.

Serving as a KALBITOR Treatment Site

If you choose to serve as a KALBITOR Treatment Site and administer KALBITOR to treat your patients' acute HAE attacks, KALBITOR Access® program specialists will coordinate and oversee the process of setting up your medical office. They will also facilitate ordering and shipment of KALBITOR to your office.

Your patients can also be administered KALBITOR at a local hospital, emergency room, and even at home with KALBITOR Home Infusion ServicesSM. KALBITOR is not approved for self-administration. Click here to learn about services and support provided by KALBITOR Access as part of KALBITOR Care.

References
12 KALBITOR® (ecallantide) Full Prescribing Information, Dyax Corp., Burlington, Massachusetts, February 2012.

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Important Safety
Information for KALBITOR.

SAFETY INFORMATION

Questions about KALBITOR? Request a call from a Dyax Corp. representative for more information.

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Learn how KALBITOR Care can help you prepare a treatment plan for your patient’s next acute HAE attack.

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KALBITOR subcutaneous injection is indicated for treatment of acute attacks of hereditary angioedema (HAE) in patients 16 years of age and older.
Important Safety Information EXPAND ›

WARNING: Anaphylaxis

  • Anaphylaxis has been reported after administration of KALBITOR.
  • Because of the risk of anaphylaxis, KALBITOR should only be administered by a healthcare professional with appropriate medical support to manage anaphylaxis and hereditary angioedema.
  • Healthcare professionals should be aware of the similarity of symptoms between hypersensitivity reactions and hereditary angioedema and patients should be monitored closely.
  • Do not administer KALBITOR to patients with known clinical hypersensitivity to KALBITOR.

CONTRAINDICATIONS

Do not administer KALBITOR to a patient who has known clinical hypersensitivity to KALBITOR.

WARNINGS AND PRECAUTIONS

In 255 HAE patients treated with intravenous or subcutaneous KALBITOR in clinical trials, 10 patients (3.9%) experienced anaphylaxis. For the subgroup of 187 patients treated with subcutaneous KALBITOR, 5 patients (2.7%) experienced anaphylaxis. These reactions occurred within the first hour after dosing.

Symptoms associated with these reactions have included chest discomfort, flushing, pharyngeal edema, pruritus, rhinorrhea, sneezing, nasal congestion, throat irritation, urticaria, wheezing, and hypotension.

Patients should be observed for an appropriate period of time after administration of KALBITOR, taking into account the time to onset of anaphylaxis seen in clinical trials. Given the similarity in hypersensitivity symptoms and acute HAE symptoms, patients should be monitored closely in the event of hypersensitivity reaction.

ADVERSE EVENTS

The most common adverse events (≥3% and greater than placebo) in HAE patients were headache, nausea, diarrhea, pyrexia, injection site reactions, and nasopharyngitis. There is a potential for immunogenicity with the use of KALBITOR. Patients who seroconvert may be at a higher risk of hypersensitivity reaction. The long-term effects of antibodies to KALBITOR are not known.

USAGE

KALBITOR should only be administered by a healthcare professional with appropriate medical support to manage anaphylaxis and hereditary angioedema. Safety and effectiveness of KALBITOR in patients below 16 years of age have not been established.

Please see Full Prescribing Information, including Boxed Warning and Medication Guide.

Healthcare professionals should report all suspected adverse events associated with the use of KALBITOR. Please contact Dyax Corp. at 1-888-452-5248. Alternatively, this information may be reported to the FDA MedWatch System by phone at 1-800-FDA-1088 or by mail using Form 3500 at www.fda.gov/medwatch.