If you have a medical concern your doctor can prescribe this for a medical treatment. During the early 2000's my wife required daily injects of Interferon 6 days a week and one day to recover. She was physically sick for six days and the seventh day she recovered before the injects started again. She did this for 3 months then three month no injects then another three months. He body was cured of a killer virus but the Interferon was very strong on her body and made her vomiting sick. If you get your prescription beware of the strong affects it can have on your body. I think the drug attacked everything in my wife's body because this drug is so strong. Now I have CLL and she is helping me by assuring I eat healthy meals which is greater then my past diet.