I'm 89 and have been prescribed Forteo for osteoporosis. I'm recovering from two vertebrae compression fractures. The pharmacist said that I shouldn't get up fast or could experience dizziness or fainting. There is a big difference between the two. Dizziness is a warning to sit down but there is no warning in fainting. If I were to faint I probably would be worse off than never taking any medicine. I have only fainted once and it resulted in a ruptured spleen. Has anyone or do you know anyone who has experienced fainting while taking Forteo?