Gakic = Glycine + L-arginine + Calcium
Two non-essential amino acids and a calcium source for a great deal of money.
$79.99 US$ for 544 grams
It is basically 10 grams of glycine/L-arginine/calcium with 14 grams of dextrose/maltodextrin. and additional sugars and flavourings. MuscleTech's claim is that it will fight off fatigue while training and lead to an increase in strength by 10.5%.
As it is suggested to be used before working out, the dextrose/maltodextrin will provide you with an energy spike and thus enable you to workout longer. The L-arginine, although in small amounts, will dilate blood vessels and allow for a greater supply of oxygen to the muscle tissues which
may lead to an increase in strength over time.
These ingredients can be purchased individually though at a significant saving than what MuscleTech is offering in this singular supplement. I would pass on it.
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KP -- Fitness Basics