I can only say that my husband had great results with Dupixent. But it isn't for every type of asthma. I found about the drug after reading about Fasenra. You might want to start your research there. Ask your doctor about these two drugs. My husband's doctor had to send us to another doctor to get information because they are an injection and he "didn't do injections." Before Dupixent, my husband could barely walk from the bedroom to the living room but now he is back to his old hobbies and can go shopping with me.