Gakic is being marketed as an "anti-fatigue" supplement (not necessarily an "energy booster" but rather something that will prolong the onset of fatige during a workout). It is mostly an amino acid stack, with KIC (which is related to leucine), glycine, and arginine. Most whey protein products should contain adequate amounts of these aminos, so there shouldn't be a deficiency. But what Muscle Tech is trying to do here is separate the amino acids from the protein completely. This was actually a trend in the 80's, but is just now recently starting to come back around again.
