Used to take White Flood, grape I think, and it worked well. I used to have half servings because I hated the flavour of a full serve. Pretty sure it's still unavailable for import from the states and pretty expensive here.Now I have 80-100mg caffeine and some Powerade powder Pre Training.
Just make sure to get druggy scales if you get caffeine and read it properly, the first time I used it I thought I put 50mg in my shake but actually put 500mg in... Was just a little wired after that lol