I bought the new Jack3d to see if it was anything similar to the old formula and it didn't give me that same "tingly" feeling as the old one. I didn't expect it to be the same as the old one, but I figured I would try it. Anyone try anything that gave you the same effect as the old Jack3d? Something at GNC or something completely different? I'm trying 30mg of adderall but they are capsule time released. Not really working out for me right now and I don't know how long it takes to kick in.