Not GP, but for me it really seemed to affect my sleep quality in addition to keeping me up later. I started by taking 100mg at 8AM and another 100mg at 12PM. Any later and I'd still be awake at 2AM.
The lethargy and brain fog went away if I dosed again, but that only compounds the problems.
I still dose when I need a guaranteed day of focus, but I really try not to use it on consecutive days.
The lethargy and brain fog went away if I dosed again, but that only compounds the problems.
I still dose when I need a guaranteed day of focus, but I really try not to use it on consecutive days.
YMMV