To me, this post and testimonial comes across as fishy. I get the feeling this guy has some financial interest in whatever company makes PharmaNAC, and is greatly exaggerating claims to attract potential buyers. Especially conspicuous, in my opinion, is his assertion that high dose acetylcysteine causes him to feel "high."
It would be interesting if someone was to purchase acetylcysteine from another company and take it in dosages equivalent of the standard PharmaNac regimen and report back with results.