I gave some 25i blotters (at 750 ug) to friends who were on speed. One said he didn't feel much and another said he felt an MDMA-like effect but very little visually. The one who said he didn't feel much took another blotter and then also felt the serotonergic effects but only slight visual effects. Talked to another friend about it and he said speed just kills the visual part. He says his visuals just die off after he does speed.
Thanks dude, thats interesting, anyone know why?