I have been on Afatinib ,targeted therapy for six months now ,for lung cancer ,I was on 40 mg ,then the doctors put it down to 30 mg I was a very active person ,but these pills are giving me no qaulity of life ,I can't stop coughing ,I'm very cold when it's hot ,my appetite is terrible ,I just feel awful ,and wondering if anyone else is on these pills and suffer side affects like me ,if so do they take any supplements to help themselves .