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(oh mah lye zoo' mab)Omalizumab injection may cause serious or life-threatening allergic reactions. You may experience an allergic reaction immediately after receiving a dose of omalizumab injection or up to 4 days later. Also, an allergic reaction can occur after you receive the first dose of medication or at any time during your treatment with omalizumab. Tell your doctor if you are allergic to omalizumab injection, and if you have or have ever had food or seasonal allergies, a serious or life-threatening allergic reaction to any medication, or sudden breathing problems. You will receive each injection of omalizumab in a doctor's office or medical facility. You will stay in the office for some time after you receive the medication so your doctor can watch you closely for any signs of an allergic reaction. Tell your doctor if you experience any of the following symptoms: wheezing or difficulty breathing, shortness of breath, cough, chest tightness, dizziness, fainting, fast or weak heartbeat, anxiety, feeling that something bad is about to happen, flushing, itching, hives, feeling warm, swelling of the throat or tongue, throat tightness, hoarse voice, or difficulty swallowing. Call your doctor immediately or get immediate emergency medical attention if you experience any of these symptoms after you leave your doctor's office or medical facility. Talk to your doctor about the risks of receiving omalizumab injection.
Before receiving omalizumab injection,
- tell your doctor and pharmacist if you are allergic to any medications or any of the ingredients in omalizumab injection. Ask your pharmacist or check the Medication Guide for a list of the ingredients.
- tell your doctor and pharmacist what other prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking or plan to take. Be sure to mention any of the following: allergy shots (a series of injections given regularly to prevent the body from developing allergic reactions to specific substances) and medications that suppress your immune system. Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
- tell your doctor if you have or have ever had cancer.
- tell your doctor if you are pregnant, plan to become pregnant, or are breastfeeding. If you become pregnant while using omalizumab injection, call your doctor.
- talk to your doctor about whether there is a risk that you will develop a hookworm, roundworm, whipworm, or threadworm infection (infection with worms that live inside the body). Tell your doctor if you have or have ever had any type infection caused by worms. If you are at high risk of developing this type of infection, using omalizumab injection may increase the chance that you will actually become infected. Your doctor will monitor you carefully during and after your treatment.
- pain, redness, swelling, warmth, burning, bruising, hardness, or itching in the place omalizumab was injected
- pain, especially in the joints, arms, or legs
- ear pain
- swelling inside of the nose, throat, or sinuses
- fever, muscle aches, rash, and swollen glands within 1 to 5 days after receiving a dose of omalizumab injection
- shortness of breath
- coughing up blood
- skin sores
- severe pain, numbness and tingling in your hands and feet