Definitely work it into your system slow. One scoop for the first week. Then you can up it to two. Of all the stuff I've taken, my body responds the best to Jack3d.
Yep that tingle feeling is when I know to train hard. I use 4 scoops of Jackd with D-4 as a cutting agent. I switched to Elite Protien because my supplement guy was pumping it. Chalky crap I can't wait to kill it and get back to synthia 6