Alanine
Argnine
Asparaginine
Aspartic Acid
Carnitine
Citruline
Cysteine
Cystine
GABA
Glutamine 
Glycine 
Histidine 
Isoleucine 
Leucine 
Lysine 
Methionine 
Ornithine
Phenylalanine 
Proline 
Pyroglutamate 
Serine 
Taurine 
Threonine 
Tryptophan 
Tyrosine 
Valine