Tyrosine is an amino acid that plays a crucial role in the production of important substances in the body. It is a building block for proteins and is involved in the synthesis of neurotransmitters like dopamine, norepinephrine, and epinephrine, which are essential for mood regulation and stress response. This amino acid can be obtained from various food sources, including dairy products, meat, fish, eggs, nuts, and beans. Additionally, the body can produce tyrosine from another amino acid called phenylalanine, which is found in many protein-rich foods.