rstarre,
There are many lawsuits pending against Bayer (maker of Baychol.) God, that stuff was strong...FDA initially topped it out at .3 mg. MAX and slowly upped the allowance to .8 milligrams. August, 2001, after a passle of deaths,
Baycol was "voluntarily" withdrawn from the market.
The cases against Bayer are almost all from rhabdomyolysis (severe muscle necrosis) which either does or doesn't damage or destroy the kidneys. That kidney destruction from being flooded with waste material from the muscles is what killed those who died.
Fibromyalgia is a tough case to prove. Most doctors pay it lip service while really doubting its existence. Some view it as a fancy name for "aches and pains." There is no test to confirm it and it's damage is invisible, thus it won't do well in a court of law. Without confirmable damages there is usually no compensation.
There are class actions mentioned all over the net. Perhaps get in touch with one of the law firms and see if you can join one of the actions? (I just watched Erin Brockavitch for the third time

)