True story: A close friend of mine took Ayahuasca with a shaman and was then committed to a psychiatric facility in New York for almost a week. She was badly shaken up by the experience. I guess she didn't have good support, or she wasn't suited to taking it, but obviously the experience turned out to be horrific. So be careful with decisions like this...
It is very unfortunate that this happened to your friend. However, brief anecdotes like this are not incredibly useful without a great deal of additional information. * Did your friend or others in her family have a history of mental illness? * Was she depressed or otherwise suffering from mental illness at the time of the trip? * Was she on any other drugs (prescribed or not) apart from ayahuasca? * Had she had much…
I certainly have also seen people benefit from psychedelics but the danger is real and it's difficult for the dilettante to predict who is at risk and who is not.