It is the precursor for the neurotransmitter serotonin, which influences mood and sleep. Tryptophan is necessary for production of the B-vitamin niacin. Tryptophan has been studied in the past for insomnia, anxiety and depression. Valine Valine is an essential amino acid that, in combination with leucine and isoleucine, make up the group of amino acids known as branched chain amino acids. They should be supplemented in combination with each other.
Helps boost energy and maintain healthy growth.