Took a whole bottle. Have to say I was about as "on" as I have felt in the past 10 years or so. Excellent for any type of sales occupation. Rebuttals tend to come a little easier. I have to say mornings after a good nights' sleep, combined with 3 pills on an empty stomach turns me into a machine.
2nd bottle just delivered to my office today.
On a side note, went to walmart 3 days ago and saw "spike". Said what the hell and picked some up. Long story short, Felt nothing, not good, not bad....nothing. Tried it with extra caffiene, w/o any stimulants, on an empty stomach, full stomach, tried 3, tried 2, tried 1. Absolutely nothing! However, I was pleased that I did not get the bad reaction some seem to get on the stuff!