Depends, short acting was ok for me but not as side effect free as pure Dexedrine. When I moved to XR’s i noticed that I was getting jaw tension and afternoon headaches on the efficacy down slope, along with a huge loss in energy.
I have since switched to Vyvance and it has a more steady level of performance without as sharp a peak and slower tapper, but I still struggle with my afternoon slump. I also still some times get headaches, and flights of anxiety but I think those are partially driven by too much caffeine.
im not on Methyl’s but idk. Not sure I can can live without coffee.