Remember not so long ago when Prozac became the world’s largest selling medication of any kind, and then for years how Prozac, Paxil and Zoloft took over many of the top 10 spots? Remember the explanations at the time–that they were wonder drugs and that 15-50 percent or more of Americans would need them some time in their lives? To many people this seemed like a scientific breakthrough when in reality it was … a triumph of marketing.