Immune boosting symptoms and conditions

I am normally a very physically fit specimen, working outside every day. One 500 mg. tab of this poisencompletely debilitated me. Within six hours of taking levaquin I experienced excruciation soreness in my arms and shoulders. My throat swelled up and I could barely breath. I was perscribed steroids to stop the swelling - I took only ONE 500 mg time release tab 7 days ago and today I am still experiencing incredible pain.I am so sore I can't sleep. If anyone wants to start a call action suit I am in - I have NEVER sued anyone - but I am furious.Any advise out there as to how I can flush this poisen out of my system?
Chris