I would go with the stack I take. Ltyrosine, dmae, oxi, alpha, and Bacopa Monnieri. This stack is similar to powerdrive except I added a few extra ingredients. I mix them all together except for the bacopa, I had to encapsulate that nasty shit. I take them about 30-40 mins before a fast day or a meet on a empty stomach. Clears the mind and gets those nuerons firing. Plus the oxi and the alpha give you the gift of gab. I remember one time I took them I went to the mall and left with 10 girls numbers. My game was on point that day. lol