ADHD medicine is speed. I took it for many years, trust me it will do more harm than good. What kind of productivity are you looking for in your 50's? ADHD pharma drugs are bad, I took them for almost 10 years before I finally gave up and I feel like I am free. I like my adhd mind much more than my non-emotional hyper state. There are natural ways you can balance your serotonin
I'm sure you mean to help, we're all on different paths - this isn't something I've gone into blindly and on impulse, I know my shit.
I'm glad to hear you feel free at the moment. So do I.
And when you make it to your 50s I expect you'll understand that even if your definition of productivity changes, you're not ready to lie down and die just yet.
Sorry looking back at my comment it is fairly opinionated. I am sure you have done your due diligence. It was a necessary evil for me during some times in my life, to which without it, I'm sure I wouldn't be where I am now. One of those things that's hard to balance I guess. I no longer need it, but I won't be surprised if another time in my life comes where I try and rationalize it's use.