It really work for me and give me a uge boost like 10min after I take it.
But I take it just only when I need it, before going to party, before exam or important meeting if i'm tired. I do not recommand to take it at a daily base, not sure if it's work well after that.
I take one spoon with a big glass of fruit juice, and i feel like taking a 500ml energy drink (monster or red bull).