Despite not using them in a clinical, supervised environment, or in conjunction with therapy, the experience actually had me somehow understand where my depressions came from and helped overcoming them like nothing else did.
Of course it didn't "cure me", managing depression has been a way longer journey - but for me it changed my life from "barely able to get up" to a state where i was actually able to do things, start working, live my life and care for myself almost overnight. Literally felt like it had re-wired my brain, never since relapsed into quite such a dark and hopeless state i was living in back then.