L-tyrosine is one form of the amino acid tyrosine. Tyrosine is present in all tissues of the human body and in most of its fluids. It helps the body produce enzymes, thyroid hormones, and the skin pigment melanin. It also helps the body produce neurotransmitters that helps nerve cells communicate. Tyrosine is particularly important in the production of epinephrine, norepinephrine, and dopamine. Our l-tyrosine capsules are nothing short of amazing. pullulan capsules shells are used making these amazing capsules vegan & vegetarian friendly. Each capsule contains 675mg of goodness.