I have a friend who said it changed him. He seemed to have a very emotional, introspective trip. It wasn't a dramatic change. He said it made him see his life differently and made him realize how lucky he was. That life is alright. I felt like that already. My trip didn't change me, but it did have an effect on my thoughts for several days afterward. I felt very contemplative for a week or so.

It won't make you a different person but it may cause you to take a look at your life from a different perspective which may cause you to want to change.