The immune system normally protects your body by fighting harmful things such as infections. Allergies can start at any age. In people who are allergic, the immune system acts in a different way. With an allergy, the immune system reacts to something that is normally harmless. A normally harmless
substanceDrug abuse that causes an allergic
reactionAllergic reactions
Allergic reactions to medication
Dermatitis, reaction to tinea
Drug allergies
Febrile/cold agglutinins
Insect bite reaction - close-up
Intradermal allergy test reactions
Positive reaction to allergen
Transfusion reaction is called an allergen. With the first exposure to an allergen, there are no symptoms, but the body remembers it as harmful. With later exposures, the immune system produces a substance called immunoglobulin E (IgE). IgE is an antibody that tells special cells to release chemicals. One of these chemicals is histamine. These chemicals cause uncomfortable and sometimes dangerous allergy symptoms. When a person has allergy-induced asthma, this will make their asthma worse.
XolairŽ (omalizamab) is an anti-IgE medicine. By keeping IgE from working, XolairŽ (omalizamab) injections decrease the number of asthma attacks. XolairŽ (omalizamab) is given every 2 to 4 weeks as a subcutaneous shot. That means that it is injected just under the skin. The dose depends on your IgE level and your body weight. Your IgE level is measured using a simple blood test. XolairŽ (omalizamab) injections are recommended for people with asthma symptoms that continue even though they are using an inhaled steroid on a regular daily basis and have an IgE level between 30 IU/mL and 700 IU/mL. The XolairŽ (omalizamab) injections are usually stopped if your allergy-induced asthma has not been helped after 4 to 6 months.
The most common side effects with XolairŽ (omalizamab) injections are:
ˇ Injection-site reaction;
ˇ Viral infections;
ˇ Upper respiratory infection;
ˇ Sinusitis;
ˇ Headache; and
ˇ Sore throat.