Amino acids are the building blocks for all proteins, making them essential for a number of body functions, including fluid balance, enzyme production, cellular repair and energy metabolism. Amino acids also provide a readily available form of nitrogen, a critical element that forms various compounds such as neurotransmitters and creatine. In humans, protein is composed of 20 amino acids, only some of which the body is able to produce. Those that need to be obtained from exogenous sources are referred to as the essential amino acids. Pure Encapsulations' Essential Aminos formula is based on the ratios of essential amino acids from high biological value (BV) protein sources. Proper intake of these amino acids is important for the synthesis, repair, and metabolism of muscle, cells, and tissues.*Pure Difference: What makes us different isn't just our process or what goes into our supplements -- what we leave out matters, too. Pure Encapsulations products are FREE FROM wheat, eggs, tree nuts & peanuts, gluten, artificial colors, flavors & sweeteners, coatings and shellacs, GMOs, and unnecessary binders, fillers & preservatives. Pure Quality: Our supplements are made with only premium ingredients sourced from trusted suppliers and guided by our nutritional experts, then carefully manufactured and tested to verify their potency and purity. Neurotransmitter Health: Amino acids also provide a readily available form of nitrogen, a critical element that forms various compounds such as neurotransmitters.*. Protein Support: Amino acids are the building blocks for all proteins, making them essential for a number of body functions, including proper fluid balance, enzyme production, cellular repair and energy metabolism.*. Muscle/Tissue Support: Essential Aminos contains a balanced ratio of essential amino acids in one dietary supplement for optimal support of protein synthesis and metabolism.*.