I got some early on and tried it 6 times. After that I threw it away... the stuff is just disgusting. I mean, I had some good moments on it, but the entire state is so uncomfortable and clenched, and the actual mental effects are not very good, in my experience. I love AMT a lot, but I very much dislike 5-MeO-AMT. it's true that some people seem to enjoy it (although to be honest almost every positive report I've read is from an author who also enjoys other nasty trips like Coricidin, diphenhydramine, etc). Give it a try since you got it, you never know, but start with like 2mg at most. Personally I took it up to 3.5mg once but that was... not pleasant. I never threw up on it, nor did it cause significant nausea for me. Instead, it caused this terrible body sensation with a headache and this general feeling of nastiness and regret for having taken it.
I've actually experienced worse come-ups from other things, but the thing about almost all other psychedelics is that they level off and become very worthwhile after they fully come up. 5-MeO-AMT, on the other hand, remained in this nasty, unpleasant state for the entire trip. It didn't get better at all until it had finally worn off (which takes a long time),