L-Histidine is an amino acid which increases resistance to environmental allergens, aids in prevention of anemia and is a dilator to help increase blood circulation.
The body uses histidine to manufacture histamine and it's responsible for a wide range of physiological processes.
Histidine is needed to help grow & repair body tissues and to maintain the myelin sheaths that protect nerve cells. It also helps manufacture red & white blood cells and helps to protect the body from heavy metal toxicity.