Just curious, were they already fairly normal? I'm wondering if the benefits are only in a narrow group, setting, condition, etc.

For example, I could see these being useful for an alcoholic who has already decided that they need to get sober, but need help beating the dependence. On the flip side, I have a feeling that people who just take it recreationally (not for a conditions nor in a controlled/guided setting) probably aren't getting any benefit. These are all just guesses though.