Non-essential amino acid and precursor to dopamine and noradrenaline via the enzyme tyrosine hydroxylase; most consistent evidence is for preserving cognitive performance under acute stress, sleep loss, or cold exposure rather than baseline mood.
Difficulty concentrating, brain fog, and attention issues. Increasingly common in the age of distraction.
Also known as: L-Tyrosine, N-Acetyl-L-Tyrosine
Every published result for this pair, extracted and audited.
Research volume over time for L-Tyrosine × focus & concentration. Structured outcome extraction (direction, effect size) for this pair is in progress - the full analytics will appear here once audited.
Hand-selected PubMed studies, linked to the originals.
Ordered by strength of evidence, then result direction.
01Levodopa and Plant-Derived Bioactive Compounds in Parkinson's Disease: Mechanisms, Efficacy, and Future PerspectivesAktaş E, et al. · CNS neuroscience & therapeutics · 2025PMID 40808332 ↗02Neurochemical and genetic factors in panic disorder: a systematic reviewMoraes ACN, et al. · Translational psychiatry · 2024PMID 39025836 ↗03Is Citicoline Effective in Preventing and Slowing Down Dementia?-A Systematic Review and a Meta-AnalysisBonvicini M, et al. · Nutrients · 2023PMID 36678257 ↗04Verbascoside: A neuroprotective phenylethanoid glycosides with anti-depressive propertiesZhao Y, et al. · Phytomedicine : international journal of phytotherapy and phytopharmacology · 2023PMID 37657207 ↗Be the first to share what you noticed with L-Tyrosine for focus & concentration. How we calculate this.