bryan f. reviewed Qualia Mind Caffeine Free
I recommend this product if you want to crush your work! Generally lasts 5 hours for me.
It might work but I can't really tell yet.
I started with 6 per morning, now I'm up to 8. I got caffeine free because I love my morning cup of joe, so I can't say that it is helping me above and beyond the coffee. I plan to up my dose again next week.