It's quite risky, if you start with higher than a regular dose ( I started with Adderall XR 25mg, the white/orange ones) and then when the government didn't want to pay for it, demanding papers from my GP asking why I need Adderall XR (no IR here), I just said, would you script me Dexedrine instead, it's a lot less dangerous for the heart too (not even a joke) and there I left with a script for 2x10mg dex spansules in the morning and 2x5mg IR at 3-4pm. So 60 of each every month. If you're overweight, it might get you into being more active, but don't overdo it. Especially if you have a perverted girlfriend who likes to go on "marathons" with your medication...And yep, Dexedrine are free, for everyone, no under 18 then over 18 it becomes an "exception medication". Vyvanse is an exception medication for EVERYBODY, even teenagers here. But they can be scripted Dexedrine instead by their GP. Hilarious.
Those days are over since I got on methadone 2 years ago (was on it 11 months, now suboxone). Methadone and dexies didn't seem to agree together, both being bad for the heart, so I said eff it and just stockpile my dexedrine scripts since a couple years now, the things scare me that much now. It did help me beat 2 out of 3 classes needed for me to finally get my Masters....didn't happen, there's one class I'm just never gonna be able to finish, amped up or not (Physical Chemistry III).
I forgot to say, the amount of times I had chest pain from Adderall was everyday. Dexedrine after exagerating for 2-3 days, I'd get bad feels, like really horrible chest tightening.
I mostly meant that it does make you speed through life, you have your body grow older faster than it would otherwise when taking amps daily.
I did take some Magnesium Glycerophosphate(sic), a very bioavailable form of magnesium, it also contained 3 or 4 other forms of magnesium, 500mg daily, it does help protecting the heart, nerves, stomach. Also L-Arginine is a good idea if you're planning on moving around on amps...it's good for circulation, although kinda expensive if bought at the regular natural products area of a pharmacy. It is the amino acid that the inventors of Viagra studied and try and recreate something artificial that works better just for one part of the body....L-Arginine works well for that, but I mean, everyone here who ever did amps knows how it can get you to get cold feet/needles and pins feelings in the feet or hands sometimes, L-Arginine+Magnesium helps making all that go away.
What is weird is that eating/snorting typical canadian meth bombs never felt as bad for my heart, unless it was something like the last time I bought street speed...that Molson Dry beer cap shaped pill almost killed me (I'll never forget those 5 extremely loud and out of control thumps inside my chest). When I decided to call 911, they stopped, but I still felt shitty and awake....like what PMMA is supposed to do. Called the guy who sold em to me, I would get 15 methbombs at once, they were always as advertised, although the designs changed often and someday he must have decided to get rid of the shit people didn't like. I called him to tell him those pills were shit and almost had me in the hospital and there was no way i was gonna "move" them, he started yelling at me incoherent shit and something about it's normal to have your heart beat fast while on speed. That was a while ago, I don't move anything since the last decade

But yeah it was horrendous. It's what made me go to my doc and tell him that I am ADD:Inattentive diagnosed but never did much about it, Ritalin gave me tremors and nightmares (but that might have been the combo of it + the trazodone he had given me for sleep...idiotic doctor, it wasn't long even then in 2001 that I figured out online that ritalin + trazodone = bad idea. Trazodone itself I'll say is a bad idea. So we went with something else and I told about that.