Interesting customer retention scheme Big Pharma has come up with. Find a pool of folks at risk for suicide, and then get them addicted to expensive chemicals that will exacerbate suicidal ideation if they try to quit.

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4172306/

"The FDA requires two adequately conducted clinical trials showing a significant difference between drug and placebo. But there is a loophole: There is no limit to the number of trials that can be conducted in search of these two significant trials."