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Xolair is a medication to combat allergic asthma. Xolair blocks immunoglobulin which causes allergic asthma.

IgE naturally occurs in your body in small amount. However, the production of IgE can increase if the lungs are exposed to an allergen that will trigger the production. When IgE combines with the allergens, swelling of the lungs will follow which are the initial symptoms of allergic asthma.

Xolair is used by patients who are older than 12 years old, have moderate to chronic state of allergic asthma, and patients who have allergic despite other medications.

Dangers in Taking Xolair

While Xolair is an effective medication, it is important to know the certain medical conditions that will prohibit any patient to take in Xolair. This medication is not advisable to women who plan to have a baby or are breast feeding. It is also not advisable to take Xolair with dietary supplements and herbal medicines. Most importantly, Xolair cannot be taken if the patient has a history of cancer. While there are drug interactions with Xolair, there is no specific interaction that is described.

There are certain precautions that need to be taken into consideration before taking Xolair. One of Xolair’s side effects is dizziness. Therefore it would be hard to do stringent physical activities or actions that require quick reflexes. If you are taking Xolair, it is important that you take precaution when driving, operating machinery, or physical sports that can endanger your life. Although Xolair is treats allergic asthma, it can be an allergen in itself. Watch out for allergy symptoms and promptly notify your doctor before when an allergic reaction occurs.

Xolair is a prevention drug. It is not a reliever in the event of an asthma attack. In addition, Xolair might take several months to work, so do not be discouraged if the medication does not take effect in the first month of undergoing medication.

Side Effects

Xolair is host to a number of side effects. However, the consensus is that Xolair has little to no side effects. Minor side effects include bruising, itching, pain, redness, and swelling of the skin, arm and legs. The more serious side effects are allergic reactions which include swelling of the face and mouth, tightness of the chest, and difficulty in breathing.


Xolair is given once every two to four weeks. Usually, the doctor administers the drug directly to the patient. The doctor will recommend the needed dosage depending on your IgE level, blood workup, and weight.


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