Current fashion in antidepressant research

Just to reinforce my previous post, Psychiatric Times has a video article suggesting that the next fashion in antidepressant research will be based on glutamine not serotonin. At least one of the apparent drivers for this research is the realisation that antidepressants don't always work (see previous post). But, let's please not let any of these new agents onto the market if they're no better than the old ones.