yes. it's a targeted medicine proven to help prevent severe asthma attacks, and lower oral steroid use. about 50% of people with severe asthma have too many cells called eosinophils in their lungs. fasenra™ is designed to work with the body to target and remove eosinophils. fasenra™ is an add-on injection for people 12 and up with severe eosinophilic asthma. don't use fasenra™ for sudden breathing problems or other problems caused by eosinophils. fasenra™ may cause headache, sore throat, and allergic reactions. get help right away if you have swelling of your face, mouth, and tongue, or trouble breathing. don't stop your asthma treatments unless your doctor tells you to. tell your doctor if your asthma worsens or if you have a parasitic infection. fasenra™ is a targeted treatment for eosinophilic asthma.