wouldnt be suprised if you felt like puking but just end up dry heaving for a good few hours. MDA is pretty toxic.
I did briefly later on after the shocks started getting less intense. Was left disoriented for about a week afterwards though. There were rumours flying around that the gym owners (was an afterhours in a gym) were making their own pills, as a lot of people were in a very bad way that evening. Maybe it was a very high dose of MDA. My mate thought they were ket pills, but doubt that would cause the shocks?