I strongly urge people to not go by “feeling”.
In a perfect scenario, you will have an increase in productivity and other people will notice, but you will feel nothing.
I have done self-studies where I take days with similar workloads and time myself.
Once medicate, once not.
Even on days where I don’t “feel” different, I can get work done in 1/6 the time on meds.
My wife totally notices the difference.