Guys, I hope you are all aware of the fact that increased absorption might lead to a higher peak plasma concentration of MDMA, ergo more side effects. With MDMA dosage is extremely critical in my experience. There's a ton of 120mg rolls floating around here when I last check (I don't use rolls, nor am I in the "scene" myself aside from a few contacts). With 120mg is really an ideal dosage for most people. 170 might have you feel like utter crap. I'm just proposing, maybe many of those added sides would also appear on a higher dosage?? Plus, caffeine has some pretty bad side effects itself, I wouldn't do this unless you have a tolerance for it which ime pretty much eliminates any subjective effects except from keeping withdrawls locked out.