People complain that the F.D.A. takes far too long in approving “new” drugs, but they seem to be equally obtuse in pointing out the dangers of using drugs they have already approved.  According to a new article appearing in the New York Times, the F.D.A seeks tighter control on prescriptions for class of painkillers.     I suppose we should be grateful that the guys and gals in the white robes in D.C. have finally come to their ...