It does not improve motivation past the first few weeks (the honeymoon phase). Once your body is used to it you have to still talk yourself into doing whatever it is you need to start. Or even better have a routine to get you started on things so you can do it on autopilot.

The only rewarding feeling that has manifested itself for me is having more pride in the code I write. Completing goals otherwise feels the same as before I medicated.

Without medication the best feeling was post exercise, but this feeling is and was short lived.

The feeling of the medication is totally transparent now. I do not feel any side effects, or feel anything that would suggest they are kicking in.