HOW should this medicine be used?
Omalizumab injection comes as a solution (liquid) in a single-dose, prefilled syringe and autoinjector. Omalizumab injection also comes as a powder in a single-dose vial to be mixed with water and injected by a healthcare provider. Omalizumab injection is injected subcutaneously (under the skin). When omalizumab is used to treat allergic asthma or nasal polyps or to reduce allergic reactions to food, it is usually injected once every 2 or 4 weeks. You may receive one or more injections, depending on your weight and medical condition. When omalizumab is used to treat chronic hives, it is usually given once every 4 weeks. Your doctor will determine the length of your treatment based on your condition and how well you respond to the medication.
If you will be injecting omalizumab injection by yourself at home or having a friend or relative inject the medication for you, your doctor will show you or the person who will be injecting the medication how to inject it. You and the person who will be injecting the medication should also read the written instructions for use that come with the medication. Be sure to ask your doctor or pharmacist if you have any questions about how to inject the medication.
Remove the prefilled syringe or prefilled autoinjector from the refrigerator and allow the syringe to warm to room temperature for 15 to 30 minutes (prefilled syringe) or 30 to 45 minutes (prefilled autoinjector) away from direct sunlight before you inject the medication. Do not try to warm the medication by heating it in a microwave, placing it in hot water, or through any other method. Inject omalizumab within 4 hours after taking it out of the refrigerator. Dispose of used syringes in a puncture-resistant container. Talk to your doctor or pharmacist about how to dispose of the puncture-resistant container.
Always look at omalizumab solution before injecting it. Check that the expiration date printed on the package has not passed. Look closely at the liquid in the syringe or autoinjector. The liquid should be clear and colorless to pale brownish yellow and should not be cloudy or discolored or contain particles. Call your pharmacist if there are any problems with the package or the syringe or injection device and do not inject the medication.
Do not remove the cap from the prefilled syringe or autoinjector until you are ready to inject omalizumab. Do not replace the cap after you remove it. Do not use the syringe or autoinjector if you drop it on the floor.
You may inject omalizumab injection on the front of the thighs or anywhere on your stomach except your navel (belly button) and the area 2 inches around it. If another person is injecting your medication, the outer area of the upper arms also may be used. Do not inject the medication into skin that is tender, bruised, red, hard, or not intact, or that has scars, moles, or bruises. Choose a different spot each time you inject the medication, at least 1 inch away from a spot that you have used before. If the full dose is not injected, call your doctor or pharmacist.
It may take some time before you feel the full benefit of omalizumab injection. Do not decrease your dose of any other asthma, nasal polyps, or hives medication or stop taking any other medication that has been prescribed by your doctor unless your doctor tells you to do so. Your doctor may want to decrease the doses of your other medications gradually.
Omalizumab injection is not used to treat a sudden attack of asthma symptoms. Your doctor will prescribe a short-acting inhaler to use during attacks. Talk to your doctor about how to treat symptoms of a sudden asthma attack. If your asthma symptoms get worse or if you have asthma attacks more often, be sure to talk to your doctor.