What do you do when you want a heavy kava night and you haven't got a heavy hitter in stock? Add some Isa! I've had a couple of shells of a mix, one half full aluball of noble and a quarter full ball of Isa. I really notice the difference. The Isa really adds another dimension to the feeling, a much stronger body feel. No doubt I'll sleep really well and I doubt it'll have too much effect by the morning, I'm not going to drink a lot tonight.