Here's something to think about.
I took around 350mg of DXM a few months back, two weeks later I dropped a pill. I felt it coming and it did peak, my eyes were wobbling jaw clenching all that shit but my head was as clear as a bell. No loved up feeling no euphoria. Now I didnt out it down to DXM at the time but since then I've taken DXM again at around the same dose and then had a pill a week later same story. Just this last week gone i had been taking cold and flu tablets. didn't realise they had 10mg of DXM in each of them. Once again my roll was there ust couldn't feel the "real effects" of MDMA just my body was fucked up.
I've taken quite a few pills back to back over the course of a few days before and this is NOTHING like the feeling you get after having DXM.
I don't know exactly what's going on but I'm sure I've read somewhere that DXM works as a neuro protectant somewhere along the line. so perhaps it's simply blocking the effects of the MDxA??