I enjoyed 2 scoops, 1 scoop 5 hours later when I took it. Occasionally I got a little stimmed out, but nothing I couldn't handle. After a week or so I adjusted to it.
I will say the first time I took it I started straight with 2 scoops, and about an hour later though to myself, "man you just made a huge mistake". I was shaking, sweating bullets while sitting around and doing nothing. Took about 5 hours to wear off. I scaled back to 1 scoop twice a day for a week, then upped to 1.5 scoops for another few days, then went to two.