Well these types of drugs are hard on the liver, the kidneys and the bladder. It would further the knowledge about this drug if you, after a week or two of particularly heavy use, went to the doctor and had your blood tested with a broad spectrum diagnostic blood test. Would your liver enzymes be elevated? Would your kidneys still be doing a good job? Mineral balance? Blood Lipids? Creatinine? Since you are toxifying yourself with extreme doses of this alkaloid those results would be welcome. Also let him test your blood oxygen saturation. Thats a 1 minute thing, he puts a clip on your finger and he knows.
DO THIS, after a heavy week or two go to a physician for a general checkup. They want to do one of those a year anyway to any patient, so why not then?
If you get a wide spectrum bloodtest and come out fully healthy then yes, I would be impressed. I'd expect your liver enzymes to be elevated and your kidney function impaired and/or your electrolytes out of whack. You might even have a degree of rhabdomyolysis going on, which is a major reason of people needing kidney transplants in its most severe form. Arylcyclohexylamines may bring that on, even with normal doses.
With the greatest, utmost respect to the creator, he also predicted significant opioid effects to MXE that did not materialize. Just because he designed it that way doesnt mean it actually works that way.
I have had weeks of bladder pain after using a few grams in a few weeks, and actually peed some droplets of blood. Just saying, it might not be as free of bladder effects as the designer intended.
It has for me too, but your intensity of usage worries me.
Please have that physical & blood test done after 2 weeks of heavy use and post the results here. You would actually do the community and the body of knowledge about MXE a big favor, as well as give you insight in your particular situation. You can tell the doctor you feel a bit off for days now. Having used 300-500mg a day in those days makes that not particularly untrue