Two lawsuits have been filed against drug manufacturer Pfizer, Inc. claiming its cholesterol-lowering drug Lipitor caused lasting muscle damage -- and the company didn't adequately inform the public about the potential side effects.
The men behind the separate lawsuits both said they experienced debilitating pain, weakness and memory problems after taking Lipitor, a statin drug. The symptoms subsided after the drug was stopped, but pain, fatigue and a tingling sensation in the hands and feet still remains, one of the men said.
Pfizer maintains that the number of Lipitor users who experience such symptoms is well under 1 percent, and that the potential side effects are included on the drug's labeling and in advertisements.
Lipitor is the best-selling medication in the world and generates over $12 billion a year for Pfizer.