Cabot Health Tyrosine is an amino acid that is required for the production of important brain chemicals (neurotransmitters) that help to support and enhance mood, concentration, memory and alertness. This amino acid is critical for the production of thyroid hormones and the synthesis of proteins, enzymes and muscle tissues in the body. Our Tyrosine Pure Mood Food contains a highly potent and pure form of tyrosine that is free from any additives or fillers.