My own anecdata from working at a retreat for the last six months in the Peruvian Amazon is that it definitely can. It doesn't always "work" for most people imm

My own anecdata from working at a retreat for the last six months in the Peruvian Amazon is that it definitely can. It doesn't always "work" for most people immediately (one could drink a hundred times and not actually make any progress)- it highly depends on the willingness of the person to go in to their past and work with their unprocessed traumas. It is not easy; proper intentions and concentration make a big difference. The visions can be interesting but truthfully are more of a side effect and can be a distraction if you are trying to get real work done. A good shaman will be able to "move the medicine" (really your focus) with their icaros to different areas of the body that they might see trauma stored in; this in turn can bring up memories or thoughts to push you into processing those ignored emotions.