It is significant that psychoactive drugs were originally developed for other purposes. Drugs such as Thorazine, Miltown and Marsilid were developed in the 50s as ways to treat infections. But they were also seen to have mood-altering side-effects – though scientists had no idea why or how. So, as several writers have pointed out, "instead of developing a drug to fit an abnormality an abnormality was postulated to fit a drug". Thus we are encouraged to think of our problems in terms of the lucrative solutions to problems we didn't know we had. In this way, the pharmaceutical companies are responsible for the very conditions they propose to alleviate
Forget the fact that some people are miserable because they are struggling on zero-hours contracts, or have lost their partner or have been watching the news too much – if we translate misery into some sort of chemical imbalance then someone can make big money out of it. But unhappiness is often a perfectly proper response to the state of the world. If you have a shit job or a shit home life, being unhappy is hardly inappropriate. At best, many of the drugs we are popping only deal with the symptoms of all this, not the causes. At worst, they pathologise deviations for normalcy, thus helping to police the established values of consumer capitalism, and reinforcing the very unhappiness that they purport to cure.
Please continue reading at: http://www.rawstory.com/rs/2013/08/10/taking-pills-for-unhappiness-reinforces-the-idea-that-being-sad-is-not-human/