◂ Library/Amino Acid
Amino Acid⚜ Compound

L-Tyrosine

01 / OVERVIEW

What this compound does

WHAT IT DOES

L-Tyrosine is a building block that helps your body produce important brain chemicals that affect mood and stress response. It can support mental performance, especially during challenging situations, by providing the necessary ingredients for your brain to function well. People often take it to help with focus and energy when they need it most.

KEY BENEFITS
Improved focus during stressful tasks
Enhanced mood and mental clarity
Better physical performance under stress
Steadier energy throughout the day
BEST FOR
  • • Students preparing for exams
  • • Athletes during intense training
  • • Individuals facing high-stress situations
WHAT TO EXPECT

Users may start to notice effects within 30 to 60 minutes after taking L-Tyrosine, particularly in terms of improved focus and reduced feelings of stress. Effects can vary based on individual response and context.

WHO SHOULD AVOID THIS
  • • Pregnant or breastfeeding women
  • • Individuals with hyperthyroidism
  • • Those taking certain medications for mood disorders
MYTHS & FACTS
Myth: L-Tyrosine is only for bodybuilders.
Fact: While it can support physical performance, L-Tyrosine is beneficial for anyone needing mental clarity and focus, especially under stress.
Myth: All amino acids are the same.
Fact: Each amino acid has unique roles in the body, and L-Tyrosine specifically supports brain function and stress response.
✦ Card Stats
DOSE
500-2000 mg/day
Evidence
—
Studies indexed2
How it's made

Production details below.

03 / DOSAGE

How much, when

MAINTENANCE

500-2000 mg/day

30-60min pre-task on empty stomach

TIMING

L-Tyrosine — Morning dose

Take on empty stomach

02 / EVIDENCE

Peer-reviewed studies

  • PMID: 10230711

    Cognitive performance under stress

    L-Tyrosine improved working memory and cognitive flexibility during stressful multitasking.

    B
  • PMID: 9425004

    Fatigue and cold exposure

    Tyrosine reduced performance decrements from cold stress and sleep deprivation.

    B
  • PMID 39181037 · 2024RCT

    Functional and metabolic effects of omega-3 polyunsaturated fatty acid supplementation and the role of β-hydroxy-β-methylbutyrate addition in chronic obstructive pulmonary disease: A randomized clinical trial

    B
  • PMID 38975711 · 2024RCT

    Impact of L-theanine and L-tyrosine on markers of stress and cognitive performance in response to a virtual reality based active shooter training drill

    B
  • PMID 26311429 · 2016Mechanistic Study

    The Molecular Mechanisms and Rational Design of Anti-Diabetic Vanadium Compounds

    B
  • PMID 26729332 · 2016Narrative Review

    Therapeutic Advances and Future Prospects in Progressive Forms of Multiple Sclerosis

    B
04 / INTERACTIONS

Medicine interactions

  • MAO inhibitors· antidepressant

    L-Tyrosine may increase catecholamine levels, leading to hypertensive crises when combined with MAO inhibitors.

    → Avoid use together.

    DO NOT COMBINE

  • Thyroid medications· thyroid_med

    L-Tyrosine may influence thyroid hormone production, potentially affecting medication efficacy.

    → Monitor thyroid levels closely.

    MODERATE

  • Stimulants· stimulant

    Combining L-Tyrosine with stimulants may amplify effects on neurotransmitter release.

    → Use with caution and adjust dosages accordingly.

    MODERATE

This page is a reference summary, not a prescription. Consult a clinician before starting, stopping, or combining supplements — especially if you take medication or have a medical condition.