DeAuszlo S. reviewed Qualia Mind
This is a product that actually works. It's more of a subtle onset as you won't really notice it you realize that mental fatigue is almost nil and that you're more focused and motivated to get the task(s) at hand completed
Qualia mind is a great product.
Qualia is the best I have ever used. Its the first p[roduct that comes to mind when I feel I need a mental boost.