July 25, 2016
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Xolair Patient Information including How Should I Take

What should I discuss with my healthcare provider before using omalizumab (Xolair)?

Do not use this medication if you are allergic to omalizumab.

To make sure you can safely take omalizumab, tell your doctor if you have any other medical conditions or if you take other medicines.

Using this medication may increase your risk of certain types of cancers of the breast, skin, prostate, or salivary gland. Talk to your doctor about your individual risk.

While you are using omalizumab, you may also have an increased risk of becoming infected with parasites (worms) if you live in or travel to areas where such infections are common. Talk with your doctor about what to look for and how to treat this condition.

FDA pregnancy category B. Omalizumab is not expected to harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.

If you are pregnant, your name may be listed on a pregnancy registry. This is to track the outcome of the pregnancy and to evaluate any effects of omalizumab on the baby.

Omalizumab may pass into breast milk and could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

Do not give omalizumab to a child younger than 12 years old.

How should I use omalizumab (Xolair)?

Omalizumab is injected under the skin. You may be shown how to use injections at home. Do not self-inject this medicine if you do not fully understand how to give the injection and properly dispose of used needles and syringes.

Omalizumab is usually given every 2 or 4 weeks.

Omalizumab is a powder medicine that must be mixed with a liquid (diluent) before using it. If you are using the injections at home, be sure you understand how to properly mix and store the medication.

Use a disposable needle only once. Throw away used needles in a puncture-proof container (ask your pharmacist where you can get one and how to dispose of it). Keep this container out of the reach of children and pets.

Omalizumab will not work fast enough to treat an asthma attack that has already begun. Use only a fast-acting inhalation medicine to treat an asthma attack.

Asthma is often treated with a combination of different drugs. Use all medications as directed by your doctor. Read the medication guide or patient instructions provided with each medication. Do not change your doses or medication schedule without your doctor's advice.

If you also use a steroid medication, do not stop using it suddenly or you may have unpleasant withdrawal symptoms. Talk with your doctor if any of your asthma medications do not seem to work as well in treating or preventing attacks.

Your symptoms may not improve right away once you start receiving omalizumab. For best results, keep receiving the medication as directed. Talk with your doctor if your symptoms do not improve after a few weeks of treatment.

Use omalizumab regularly to get the most benefit. Get your prescription refilled before you run out of medicine completely.

To be sure this medication is helping your condition, your doctor may want you to have allergy tests and lung function tests on a regular basis. Do not miss any scheduled visits to your doctor.

Store omalizumab in the refrigerator. Do not freeze.

After mixing omalizumab with a diluent, store in the refrigerator and use it within 8 hours. Do not freeze. Do not use the medication if it has changed colors or has particles in it. Call your doctor for a new prescription.

Side Effects Centers

Xolair - User Reviews

Xolair User Reviews

Now you can gain knowledge and insight about a drug treatment with Patient Discussions.

Here is a collection of user reviews for the medication Xolair sorted by most helpful. Patient Discussions FAQs

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

Allergies & Asthma

Improve treatments & prevent attacks.