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What is Xolair approved for?

Medically reviewed by Leigh Ann Anderson, PharmD. Last updated on Feb 21, 2024.

Official Answer by Drugs.com

Xolair (generic name: omalizumab) is approved to treat asthma triggered by allergies, sinus inflammation with nasal polyps, chronic hives and to help reduce allergic reactions due to accidental exposure to certain foods (along with avoiding foods to which you are allergic). It is not used for the emergency treatment of allergic reactions, including anaphylaxis.

Xolair is prescribed for:

Asthma

Nasal Polyps

Chronic Hives

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Food Allergy Reduction

Xolair is given by an injection under the skin (subcutaneously) from a prefilled syringe or from a vial and needle. Xolair is given in one or more injections under the skin (subcutaneous), once every 2 or 4 weeks. Your doctor will determine your dose.

If approved by your doctor, you or your caregiver can be trained to administer the Xolair dose at home using the prefilled syringe. For your first few doses, your doctor will give the medicine in a medical facility to monitor you for side effects like severe allergies.

Xolair is typically used when other treatments have not been effective to control your symptoms.

Xolair is not used to treat other allergic conditions, other forms of hives, or sudden breathing problems.

This is not all the information you need to know about Xolair (omalizumab) for safe and effective use and does not take the place of talking to your doctor about your treatment. Review the full Xolair information here, and discuss this information and any questions you have with your doctor or other health care provider.

References

Read next

How does Xolair work?

Xolair works by preventing IgE from binding to IgE receptors on mast cells and basophils. This prevents mast cells and basophils from releasing histamine and heparin. Histamine narrows smooth muscle in the airways making it harder to breathe and also causes tissue swelling, itchy skin, hives, and other allergic-type symptoms. Heparin makes it harder for blood to clot. Continue reading

Does Xolair cause weight gain?

There were no reports of weight gain or weight loss in clinical trials with Xolair. Weight gain is more likely to be caused by corticosteroids, hydroxyzine, or antihistamines that may also be used to treat allergic asthma or hives. Continue reading

What is omalizumab's mechanism of action?

The omalizumab mechanism of action is designed to target IgE (immunoglobulin E), an antibody produced by the immune system. It works by inhibiting the binding of the IgE antibody to IgE receptors on cells that can lead to inflammation and worsened allergic symptoms. Continue reading

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