No caffeine jitters, just a smooth focus that carries me through the afternoon slump — I stir a scoop into warm water and it actually tastes good. The mushroom and mycelium blend is a nice bonus for immune support.
The 12-pack lasted me a little over two weeks, and the zero caffeine part sold me since I was trying to cut back. I mix a scoop into warm water in the afternoon and get a steady focus without any jittery crash.