The first dose day I took with my normal 500mg tyrosine...this was too much; I get angry-irritable thoughts when I take too much tyrosine, and that was my experience with "energy." On subsequent days, I did not take additional tyrosine and was fine. I also normally take a half-dose of "life," and I stopped that as well-- didn't feel like I needed it. In general, I found that my mental energy was very good, maybe less than full-dose of "mind," which I am not currently taking. I found the physi...Read more.