I was prescribed Avelox day before yesterday for an upper respira...

I was prescribed Avelox day before yesterday for an upper respiratory infection and took it for two days before calling and asking to be switched. I experienced severe sharp pains in my hips, lower and middle back, and a few in various places in my legs. My eyes can't tolerate light and I am experiencing right arm numbness, weakness, and disorientation with movement. I'm sure this drug works just fine for some but my pharmacist says some people are just not good candidates for it. Shouldn't there be some sort of process for finding out who those people are instead of treating us all like guinea pigs? I feel like we operate within a medical system that decides to shoot first and ask questions later.