The FDA is consider whether to add warnings about potential heart complications to the labels of both drugs. The largest study of back belts to prevent back pain and injury finds, quite simply, that they don't work. The study found that wearing back belts didn't reduce the incidence of back pain or the amount of back injury claims filed with the company. Neither did store policies that required employees to wear back belts. Back injuries are a leading cause of worker disability, accounting for almost a quarter of workers' compensation payments.
Workers involved in material handling are often most at risk.