[kennethcwilbur]

I don't know what specific psychedelics he referred to but I can share something.

There is some research suggesting ketamine is useful for depression. http://en.wikipedia.org/wiki/Ketamine

There are legal substances which are similar ketamine which some people argue have similar properties.

I cannot verify and do not advocate.

[ciupicri]

This was on HN a couple of months ago: "Yale scientists explain how ketamine vanquishes depression within hours" https://news.ycombinator.com/item?id=4615602