Just received a new can of N2KTS Grape flavor pw a few days ago. I used one scoop on two separate occasions and both times it was too strong for me. I wouldn't consider myself extra sensitive to stims but holy crap this stuff is potent. After my workout last night I ended up having the hardest time sleeping and when I did, it wasn't very restful. I got up three hours later and feel like my body is tired but my mind is going non stop...So if you need some stims to get you going, this is IT! I think I may have to get rid of this thing, or maybe dose it at half a scoop. LOL