Citric acid (citric acid, E330) is a ingredient of almost every plant and animal cells, widely used in the food industry as an acidity regulator, emulsifier and stabilizer in order to prevent oxidation and preventing discolouration of the product. In the life processes it takes an active part in the Krebs cycle, a negative phosphofructokinase catalyst, enzyme accelerating the rate of glycolysis. In the sports supplementation used in conjunction with creatine. Preparations available at www.muscle-zone.pl