It only gave me racing heart when doing very big bombs (250 mgs) or when redosing too soon, you might get more self-conscious about your heart rate when you start to come down, but then a couple of beers take care of the problem.
As far as vasonstriction goes, a lot less than mephedrone for me, dick shrinkage is also minor compared to cathinones.
sounds really good man, thanks for the reply

at 100mg doses what should i expect? im not expecting huge rushs or anything, im hoping for something like good clean nicely europhic speed, and i take it wont be anyway near as jittery
sounds like a great chem.