I've been thinking about that lately, and I've come to the conclusion that methamphetamine really is worse than amphetamine; just not for the obvious reasons. I don't think it's significantly more neurotoxic (not from my subjective experience, and there are a number of studies that agree -- also ones that disagree though), but when you take the amounts that I do orally these days, it ends up lasting a fucking long, long, *long* time. With amphetamine I end up on my way down if I don't redose every 2-3 hours. But once I'm on a run and a good amount of meth has built up in my blood from repeating moderate doses, it just hangs out in my blood hour after hour after hour. I mean it's 6-8 hours before I really feel like it's about to slip away from me sometimes. That's nearly three times the duration of amphetamine at high dosages.That translates to longer runs, much less rest when I finally do get to sleep because there's more amphetamine still disrupting my natural cycles, and if I take really large doses of meth I almost feel like I'll go into convulsions sometimes. It doesn't happen with "pure" (pharmaceutical grade) amphetamine, but sometimes on meth I get these full body chills/spasms that rip through me and leave me with an intense dizziness for a second or two. I have no idea why. None whatsoever.Yes... I know. That could be bad. It could even be as bad as things can get, maybe. Honestly I've been at this for so long I think I'm damn lucky to be in such good health :) Besides, I think I'll be okay for the time being. My feeling is that I'm just walking the thin line between my health crumbling and being able to maintain at this level for awhile longer. Yes, I know I can stop. But I don't want to for now -- and that's that. I mean God forbid I actually get out while I might still be fine & die of old age, right?! :P I don't know; it is what it is. I think I'll stop someday. Or drop dead from acute myocardial infarction, one or the other.I'm pretty uncomfortable talking about it frankly, but... well, I don't think I would have made any different choices if I had known that years of amphetamine abuse were going to start damaging me in ways that I can't even find other examples of... hey, at least it's only on the inside still, lol. If I didn't eat a healthy diet and spend half of my time working my brain, I think I'd be long gone by now. Gotta keep learning, studying, anything at all to replace some of those neural connections I burn away. Seriously! If it helps stave off alzheimer's for awhile longer, I don't see why it wouldn't help stave off total meth burnout too. I'm not joking, look it up: learning and developing new skills is a tremendous help in keeping alzheimer's and dementia at bay.... So anyway; I've had enough of this woe-is-me shit for now -- no more being the poster boy for why meth abuse is bad tonight. Do what you like with the information, whatever that may be.tl;dr: yeah, I think meth is worse than amphetamine. But again, not for the reasons you might think.