Fasenra is used to treat severe type of asthma called eosinophilic asthma. This is when there are too many eosinophils (a type of disease-fighting white blood cell) in their blood and lungs. Too many eosinophils can cause asthma flare-ups. This type of asthma is rare, and generally occurs in adults. Fasenra works by reducing the number of eosinophils produced. This has the effect of reducing your symptoms during an asthma attack and how often you get asthma flare-ups.
|Fasenra does not give immediate relief from an asthma attack|
|If you have an asthma action plan that you have agreed with your doctor, follow it closely at all times.
For severe asthma symptoms, you should use your reliever inhaler immediately and call an ambulance on 111 or go to your nearest Accident & Emergency clinic.