Histidine

Histidine, also known as L-histidine, is a type of essential amino acid. Essential amino acids are often described as the “building blocks of proteins.” Histidine considered an “essential” amino acid because we must get it from our diets, considering our bodies cannot make this amino acid on its own, like it can other “nonessential” amino acids.

Some actually believe that histidine should be classified as “semi-essential” because the adult human body can make some, but it’s essential in the diets of infants and individuals with kidney disorder.