If I have one, it calms me down, but if I have 3 or more, for some reason I get more hyper. I don't know about coffee for me, because I don't drink it, I don't like it, But I do like coffee ice cream for some reason, which calms me down. And alcohol, I don't have it anymore because I don't like side effects that I have. I'm off the wall, when I have to much of it.