Essential Amino Acids with a remarkable 16g of EAAs per serving. Want to promote muscle growth? This is your product. Plus we've added Vitamin B6, Piperine (Black Pepper Extract) and Magnesium (electrolyte) to further support your gym goals. Amino acids are the building blocks of protein, which help to promote the growth and maintenance of muscle. Essential amino acids are the amino acids that your body needs but cannot produce on its own. You can only get them through your diet by eating things like meat or eggs, or taking a convenient supplement like this one. There are nine essential amino acids in total – three branched chain amino acids (BCAAs) and six other essential amino acids. Reflex’s EAAs gives you 16g of EAAs per serving making it a premium source of essential amino acids to promote muscle growth.