1) Essential Amino Acids: The body cannot make essential amino acids, as a result, we must get them from food. The nine essential amino acids are: histidine, isoleucine, leucine, lysine, methionine, and phenyl. Alanine, threonine, tryptophan, and valine.2) Nonessential amino acids: The body can produce these types of amino acids, even if we don't get them from the food we eat. Non-essential amino acids include: alanine, aspartic acid, and glutamic acid.3) Conditional amino acids: Conditional amino acids are usually not essential, as previously they were classified as non-essential amino acids, but recently some studies indicated that there is a group of amino acids that become essential At times like illness and stress and thus have to be ingested, the conditionally amino acids include arginine, cysteine, glutamine, tyrosine, glycine, ornithine, proline and serine.Product Description: Laperva Amino 7500: Amino Acids are organic compounds that combine to form proteins. Amino acids and proteins are the building blocks of life. When proteins are digested or broken down, the amino acids are liberated and the body uses them to produce the proteins To help the body: Digest food the growth Repair of body tissues Perform many different body functions.