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.
Chronic tiredness, low energy, and exhaustion not explained by other medical conditions.
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 × fatigue. 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.
01Differences in Ferritin, Vitamin D, and Vitamin B12 Between Fibromyalgia Patients and Healthy Individuals: A Systematic Review and Meta-AnalysisIsmail O, et al. · Musculoskeletal care · 2025PMID 39832803 ↗02Ferric Carboxymaltose (FCM)-Associated Hypophosphatemia (HPP): A Systematic ReviewMagagnoli J, et al. · American journal of hematology · 2025PMID 39935027 ↗03Dietary Supplementation for Fatigue Symptoms in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS)-A Systematic ReviewDorczok MC, et al. · Nutrients · 2025PMID 39940333 ↗04Role of vitamin D as adjuvant therapy on multiple sclerosis: an updated systematic review and meta-analysis of randomized controlled trialsSerag I, et al. · European journal of medical research · 2025PMID 40797337 ↗Be the first to share what you noticed with L-Tyrosine for fatigue. How we calculate this.