It's a blend of various insulin supportive compunds:
5g (I have 2 seperately) =
Na-R-ala: 350mg
Banaba: 240mg
D-Pinitol: 203mg
Cinnamon: 200mg
Biotin: 5mg
Chromium: 2mg
Leucine: 2,000mg
Taurine: 2,000mg
Mo over on SizeMatters forum makes it. I've found it to be really useful in nutrtient partitioning, especially when it comes to a stack of simple carbs around training time. I've only been using it for a few months now and the difference is night and day when you take carbs with it or without it.
It took a fair bit of trial and error to get a correct dose for me, and it does change depending on what I'm training at the time. Tonight is Deadlifts + accessory, so I'll be having the full whack.
Oh and you do need to have a sizeable amount of simple carbs with it/around it, at the risk of becoming hypoglycemic. It happened to me 4 times before I got my dose correct.
-Mitch.