Opioids are not part of the medication for mental health.  I work with the mental health of people everyday.  The amount of people who have given up on prescribed medication with a benefit because they found that marijuana evens them out so much better is skyrocketing.  The problem is, a hit of marijuana is never the same.  One hit might even them out shortly after quitting their medication.  The next hit doesn't affect them like the one before but they keep trying to "even out."  This process goes on into crisis which leads to bad and criminal decisions.  These guys aren't getting high to relax and play x box, they are self medicating, there is a difference.