No kidding. It's terrifying how they push drugs out onto the market without doing long-term studies. We have no idea what these chemicals can cause. Just look at bath salts - who knew a recreational drug would turn a person into a cannibal?
But.. I also think if there were more access to quality mental health care, things like this may be less frequent. I don't want to get too political, but it's scary that people have easier access to guns than mental health care here in the US. But getting help is a huge part of the battle, and unless you have friends, family, coworkers, or others in your life that encourage/force you to get help, a mentally ill person is not likely to take advantage of such services anyway.
The sad part is that there used to be a mental health hospital in that town, everyone that knew him said he was a good kid, Adam Lanza's former classmate: was a respectable collector [of guns]. She used them responsibly.