(I’m using concerta recreationally)

I’m aware that I have adhd and stims are supposed to create a calming affect, which does happen for me at low doses, however, I still get “stimmed up” like anyone else when I take larger doses of any stim. I just took a significant amount of concerta, roughly eight 54mg pills (yes my tolerance is high) and I feel incredibly sleepy. I’ve taken concerta at high doses several times and usually get that energized and euphoric stim high, most recently a week ago. The current dose I’m on is the highest amount I’ve ever taken and yet no euphoria and extreme drowsiness.

Anyone have any good explanation to why this could be the case? Should I keep slowly adding to my dose to get the desired affects? I’m aware that I am on a very high dose, but I feel no signs of overdose and my heart rate is fine. Nothing to note besides a light headache and some dry mouth.

Just to clear anything out, this Concerta is 100% real and pharmacy grade (my own script) and I haven’t taken Concerta at all for about a week. I’m also on a full night of sleep and have eaten well.