I've seen a large number of people take drugs for these conditions, including siblings, parents and close friends. My feeling is that people have the wrong set of expectations, as the medications alone often do little for people. They also need to engage in behavioral therapy, including altering their diets, surroundings and thought processes.
Moreover, it's often merely a GP, meaning a normal General Doctor, who is prescribing several meds for these conditions. That's something they are unqualified to do, and yet if you dare to question them to their patients, you'll be painted as a maniac.
I myself have taken some of them while in a funk and despite being labeled as someone who might have a mild chemical imbalance, they did little for me in that sense. It was only after I changed my diet and forced upon myself a more positive means of thinking that the issues began to remedy themselves. Another strong point that struck me was that in talking to psychiatrists, the thought that the drugs were thought to be the sole cure was substantial medical malpractice. It's a view I certainly share.
Stories, thoughts and input please...