That is what happened to my husband also.  He was given Levaquin a prostate infection.  By day 11 he could hardly get out of bed.  That was Aug of 2000. There are many other good antibiotics that work also. Check out this site and it will hopefully answer some of your questions. www.prostatitis.org 

As for my husband he continues to work {construction} however he has pain in his feet and both of his elbows.  Once in awhile he has anxiety attacks and feels like he did initially after taking the Levaquin. It is usually short lived though.  Take care all.