Insight: Antidepressants give drugmakers the blues

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Hungarian scientist Tamas Freund holds a human brain at the Institute of Experimental Medicine of Hungarian Academy of Science in Budapest in this March 16, 2011 file photo. Data from Thomson Reuters Pharma shows returns for pharmaceutical companies in the antidepressant market are collapsing - despite widespread use of pills like Prozac - as patents expire and new drugs fail to make it to market. To match Insight HEALTH-DEPRESSION/DRUGS REUTERS/Laszlo Balogh/Files