Glaxo, like other pharmaceutical companies facing severe competition from generics, aggressively marketed the treatment for Restless Legs Syndrome (RLS) with its drug Requip. Glaxo made a strong marketing push for Requip with advertising in medical journals even before approval of Requip by the FDA, sending specialists to discuss treatment with general practitioners, and advertising strongly to consumers. Half of Requip's sales come from treatment of Parkinson's disease for which it was originally designed, the other half comes from RLS. Are their pressures to treat an expanding array of diseases merely to increase sales.