Damn that's crazy, I've taken it probably 20/30 times and never had an issue, and taken it with groups of 5 or so folks and never seen that issue, not doubting you at all, just never heard of that reaction. Powder or pill? Are you sure it was good?
I bought it as a powder. We snorted a couple mgs. I tested it with one of the reagents and it checked out. I think I'm sensitive to vasocontriction. I'm aways freezing on psychedelics, this one was particularly bad. Shallow breaths, cold, tight chest. If I wasn't on drugs I would have gone to the hospital. Sex was intense though, and light visuals towards the end with trippy thoughts that just shut off at pretty much 2 hours on the dot.