my nose itching when i take it....

This medicine is awful!!! I was on vacation on the coast and had a contact allergic reaction so I was prescribed this medicine. I wake up almost every night with a SEVERE leg cramp which makes me jump out of bed to try to get some relief. Also, my joints have been aching. I have been feeling so angry about everything; I can't make myself feel better. I thought I was going crazy until I read everyone else's posts. Tonight, my back started hurting HORRIBLY!!! I can't even bend my back a little or the pain is excruciating. This is without a doubt the worst medicine I have ever taken!!! I have stopped taking it and am just waiting for the side effects to go away.