man I tripped recently for the first time in over a year(except for the night that I scored the doses) and I was so anxious on the come up that I straight vomited. haha. granted, I did eat chik-fil-a for breakfast, and that was all I had for the entire day. so having fast food for breakfast probably didn't help either. it was right before the peak, and things were getting really hectic, and I was getting kind of bored with having nothing to do(solo trip). until I finally just went and vomited. I hoped that maybe the trip would calm down after that but in the end the only answer was to ride it out watching a movie. by the time the movie was over I was feeling good again. has this ever happened to anyone during their lsd trip? I know that it can happen with mushrooms and molly, but never really experienced this much with lsd. or maybe my body is getting so used to vomiting after taking molly that now my body just likes to purge.
There's more serotonin receptors in your gut than in your brain . . . any psychedelic can cause vomiting, heck, even mxe/k
I've never vomited on LSD or Molly, only time I've ever vomited on Shrooms was during a ~20 mins uphill hike on the comeup. But eating fast food right before dosing or while coming up doesn't sound ideal.
in the long ago past, I had a migraine and took some lucy. I later puked, but this is a pretty common thing to do with my migraines sometimes.. trip got more enjoyable at the uke:
I was in a head shop once when my peak started hitting, all of the freaking incense smells just got to me. Had to run outside and blow chunks.
If you take a large enough dose it's possible. But it would be a very large dose in most cases. some people are more sensitive I suppose.
Purity of your acid could probably have something to do with it as well, higher quality LSD seems to have a smoother comeup.