Tyrosine was first isolated as early as 1846 by German chemist J. von Liebig from the protein casein, sourced from cheese. The word “tyrosine” harks from the Greek tyrós meaning “cheese”. It represents one of the 20 standard amino acids which function as building blocks for proteins in the body. Tyrosine is a conditionally essential amino acid, meaning that the body can usually synthesise sufficient levels from its precursor, phenylalanine. However, in some instances of increased demand, further intake of preformed tyrosine from the diet or supplementation may be necessary.

Tyrosine is a nutrient which is involved in the synthesis of thyroid hormones, melanin, and some neurotransmitters, especially dopamine. Dopamine is sometimes referred to as “the pleasure hormone”, due to its role in the reward system in the brain, promoting feelings of pleasure, happiness and motivation. It is also a precursor for the neurotransmitters and stress hormones adrenaline (epinephrine) and noradrenaline (norepinephrine), so it plays a role in the stress response. Tyrosine is also involved in cognitive function, and within cells to synthesise proteins.

Food sources of tyrosine include almonds, avocados, bananas, beans, beef, dairy products (cottage cheese, milk, cheese, yoghurt, whey protein), egg, fish, lima beans, oats, peanuts, poultry (chicken, turkey, wild game), pumpkin seeds, sesame seeds, soy bean products, wheat germ.

Key Indications:

As an aid to maintaining a healthy stress adaptation response

For healthy mood regulation and feelings of well-being

To assist in the maintenance of a healthy nervous system

To support balanced nervous system function

To maintain and support healthy thyroid gland function

To promote healthy thyroid hormone production

To support healthy metabolic function within the body

To help with the synthesis of neurotransmitters