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Tyrosine is a nonessential amino acid. [1][2] Tyrosine is called a semi-essential amino acid in children because adults generally produce adequate amounts, but children may not. L-Tyrosine is a starting material for neurotransmitters and increases plasma neurotransmitter levels, particularly dopamine and noradrenaline. It is also involved in the synthesis of enkephalins, compounds that have pain-relieving effects in the body. [3]

References[]

  1. Donche, Dan (2008). FF Trainer Certification Guide. USA: Fatal Fitness. 
  2. Gastelu, Dan; Hatfield, Frederick C (2006). Specialist in Performance Nutrition: The Complete Guide. Carpenteria, CA: ISSA, 17. 
  3. http://www.peptideguide.com/amino-acids/index.html
Amino Acids
Amino Acids AlanineArginineAsparagineAspartateCysteineGlutamateGlutamineGlycineHistidineIsoleucineLeucineLysineMethioninePhenylalanineProlineSerineThreonineTryptophanTyrosineValine
Essential Amino Acids IsoleucineLeucineLysineMethioninePhenylalanineThreonineTryptophanValine
Nonessential Amino Acids AlanineArginineAsparagineAspartateCysteineGlutamateGlutamineGlycineHistidineProlineSerineTyrosine
BCAAs IsoleucineLeucineValine
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