Amino acids are known as the building blocks of the body. They are vital for maintaining normal growth and repair, as well as being used to create hormones and enzymes. While possible to get the full profile of BCAAs and EAAs in the diet, it can be more difficult for those who are vegetarian, vegan and have other dietary conditions. Taking an amino acid supplement ensures that you are getting the right amino acids in the right quantities to support a healthy body.