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  • US Name:

    Xolair

  • Israeli Names:

  • Active Ingredients:

    Omalizumab

  • Brand Manufacturer:

  • Manufacturer Location:

  • Click here to view Product Insert

Xolair

Xolair is an injectable medicine prescribed to treat persistent asthma, nasal polyps and chronic hives that cannot be well controlled with alternative medications. It requires refrigeration.

Prescription Required
Xolair
Brand
150mg
1 Injection
$850.00
*Please note all prices are in US dollars

Xolair® (generic name: omalizumab) is an injectable prescription medicine used to treat:

  • moderate to severe persistent asthma in people six years of age and older
  • nasal polyps in people eighteen years of age and older
  • chronic hives without a known cause (chronic spontaneous urticaria or CSU).

Xolair works by inhibiting the binding of the IgE molecule in specific cells of the immune system that contain histamine and heparin (mast cells and basophils.) By inhibiting the binding of IgE molecules, Xolair will lower the histamine levels, and so ward off or reduce any asthma attack or hives, and shrink nasal polyps.

Xolair requires refrigeration

Before beginning your treatment with Xolair, read the Product Insert that the manufacturer issues. If you have any questions, discuss these with the prescribing doctor or your healthcare provider. Talk to your healthcare provider if you experience any side effects described here or other unexpected ones.

The most common side effects of Xolair are:

  • When treating asthma for people over the age of eleven – joint pain, especially in the arms and legs; dizziness; feeling tired; itching or skin rash; bone fractures; pain or discomfort in the ears
  • When treating asthma in children twelve years of age and under – swelling inside the nose, throat, or sinuses; headache; fever; throat infection; ear infection; abdominal pain; stomach infection; nose bleeds
  • When treating nasal polyps – headache; reactions at the injection site; joint pain; upper abdominal pain; dizziness
  • When treating chronic spontaneous urticaria – nausea; headaches; swelling inside the nose, throat or sinuses; cough; joint pain; upper respiratory tract infection.

These are not the only possible side effects. Call your doctor for medical advice if these or any other side effects persist or worsen.

There is a rare but serious possible side effect called anaphylaxis, which can happen either immediately or days later after receiving a dose of Xolair. Anaphylaxis is a life-threatening condition and can lead to death. Go to the nearest emergency room right away if you have any of these symptoms of anaphylactic shock:

  • wheezing; shortness of breath; cough; chest tightness; trouble breathing
  • low blood pressure; dizziness; fainting; rapid or weak heartbeat; anxiety; a feeling of “impending doom”
  • flushing; itching; hives; feeling warm
  • swelling of the throat or tongue; throat tightness; hoarse voice; trouble swallowing

Xolair is prescribed for the following conditions:

  • moderate to severe persistent asthma in people six and older. It will be prescribed only if the asthma symptoms are not well controlled with inhaled corticosteroids
  • nasal polyps in people eighteen years of age and older. It can be prescribed  when nasal corticosteroids have not worked well enough, or the patient is allergic to steroids
  • chronic hives without a known cause, labeled chronic spontaneous urticaria (CSU), in people twelve years and older. It is prescribed when the hives cannot be controlled with H1 antihistamine treatment.

It is yet to be determined whether Xolair is effective for people younger than the ages specified.

Xolair works by inhibiting the binding of the IgE molecule in specific cells of the immune system that contain histamine and heparin (mast cells and basophils.) By inhibiting the binding of IgE molecules, Xolair will lower the histamine levels, and so ward off or reduce any asthma attack or hives, and shrink nasal polyps.

Histamine has many inflammatory effects on the body, one of which is to contract the smooth muscle tissue in the lungs. A flood of histamine can cause wheezing and make breathing difficult, along with flu-like symptoms (runny nose and watery eyes). It can also cause tissue swelling, itchy skin, and hives. Histamine is also one of the main chemicals involved in anaphylaxis, a severe and sometimes fatal allergic response to a previously encountered allergen.

  • What are the nursing contraindications for omalizumab?

    While there are no specified contraindications, it is known that omalizumab is passed into breast milk from nursing mothers being treated with the drug. Since the safety of the drug in pregnancy and breastfeeding has not been established, doctors will usually only prescribe Xolair to pregnant women if it is absolutely necessary. If you are on Xolair and fall pregnant, be sure to tell your healthcare providers.
  • Is Omalizumab an immunosuppressant?

    Xolair’s function is to act on the body's immune system in order to prevent an allergic reaction. However, it only acts on a single pathway of the immune system, so it does not compromise the whole immune system in the same way as other immunosuppressants do.
  • Is Xolair safe long term? What is the duration of treatment for Xolair?

    Omalizumab has been used as an ongoing treatment for asthmatic patients for several years. It may take several months before patients begin to feel the benefits and patients have continued to receive regular injections. The benefits for patients with chronic hives are usually seen after three months of injections every two or four weeks. The prescribing doctor should tell you what to expect.
  • What happens when you stop Xolair?

    Omalizumab injections do not cure the underlying conditions but are instead designed to relieve the symptoms. Continuing the recommended injections is important until your doctor tells you to stop or change. The symptoms can be expected to return soon after you stop receiving Xolair injections.
  • Can Xolair cause hair loss?

    There is a small chance of transient hair loss only for people being treated with Xolair for chronic hives. It is a form of alopecia, and in Xolair clinical studies, about 2% of people with chronic hives reported temporary hair loss lasting from three to four months.

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