L-Tyrosine is a conditionally essential amino acid and a precursor to catecholamine neurotransmitters such as dopamine and norepinephrine.

What are the main benefits of L-Tyrosine?

It is commonly used to help support attention and working memory during acute stress and may support mood when neurotransmitter demand is high.

How much L-Tyrosine should I take?

Common supplemental amounts range from 500 to 2000 mg per day. Individual needs vary based on goals, timing, and tolerance.

When is the best time to take L-Tyrosine?

It is often taken before mentally demanding tasks or stressful situations. Some people take it between meals to avoid competition with other amino acids.

Who should be cautious with L-Tyrosine?

People with thyroid conditions, those using thyroid medication, or those taking certain psychiatric medications should consult a clinician before use. Stop use and seek advice if you experience adverse effects.

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L-Tyrosine

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Daha yüksek puan, daha iyi bir çalışma durumuna işaret eder, ancak mutlaka etkinlik anlamına gelmez.

A non-essential amino acid used to support cognitive function and stress resilience.

Cognitive Enhancement Stress Relief Depression / Mood Enhancement Neuroprotective

Doz aralığı

500–2000 mg

1-2 times daily or before stress/cognitive demand

Gelir

For acute support, take 30–60 minutes before stressful or cognitively demanding activities, preferably on an empty stomach.

Yağda çözünmez.

En iyi zaman

Taking with food may reduce absorption.

Açıklama

L-Tyrosine is a conditionally essential amino acid that serves as a precursor to neurotransmitters such as dopamine and norepinephrine. It is commonly supplemented to enhance cognitive performance in stressful or high-demand situations.

Avantajlar

Kanıt derecesi ile ana etkiler

Moderate

Kanıtla ilgili not

Evidence supports cognitive benefits in stressful conditions, but routine daily enhancement claims have less robust backing.

Supports cognitive performance under stress

Moderate

Supplementing with L-Tyrosine may help maintain working memory and attention during acute physical or psychological stress.

Özellikle ilgili olduğu kişiler: Cognitive Enhancement · Stress Relief

examine-ltyrosine · Examine.com - L-Tyrosine pubmed-hogervorst2019 · Hogervorst, E. et al., Tyrosine supplementation and cognitive performance: a review, Nutrients, 2019 pubmed-nery2012 · Nery, C. et al., Effect of L-tyrosine on cognitive performance under stress: Systematic review, CNS & Neurological Disorders Drug Targets, 2012

May support mood and emotional resilience

Limited

As a precursor to catecholamines, L-Tyrosine supplementation may support neurotransmitter synthesis and mood during periods of depletion.

Özellikle ilgili olduğu kişiler: Depression / Mood Enhancement

pubmed-wurtman1983 · Wurtman, R.J. et al., Tyrosine for the treatment of depression, The American Journal of Psychiatry, 1983 examine-ltyrosine · Examine.com - L-Tyrosine

Güvenlik ve Uyarılar

Önemli güvenlik bilgileri ve bilinen riskler

Sadece eğitim amaçlıdır • tıbbi tavsiye değildir

L-Tyrosine is generally well-tolerated but should be avoided in certain populations.

Uyarılar

Safe at recommended doses for most healthy adults.
High doses may cause headaches, nausea, or heart palpitations.
Avoid in people with hyperthyroidism, Graves' disease, or melanoma unless medically supervised.
May interact with medications that influence catecholamine or thyroid levels.
Avoid use if diagnosed with hyperthyroidism or Graves' disease unless under medical supervision.
Do not use with non-selective MAO inhibitors due to risk of hypertensive crisis.
Consult a healthcare professional before use if you are taking thyroid hormones or have melanoma.

İlaçlarla bilinen etkileşimler

MAO inhibitors
thyroid medications

Kontrendikasyonlar / özel dikkat gerektiren gruplar

hyperthyroidism
Graves' disease
tyrosinase-positive melanoma

etkileşimler

Etkin madde ↔ takviye / ilaç / gıda arasındaki önemli etkileşimler

L-Tyrosine can interact with certain drugs affecting catecholamine levels and thyroid function.

Avoid combining L-Tyrosine with non-selective MAO inhibitors.

drug · MAO inhibitors

AvoidStrong

Neden

Can precipitate a hypertensive crisis due to excessive catecholamine accumulation.

Öneri

Do not use L-Tyrosine if taking MAOI drugs.

nih-ods-tyrosine · NIH Office of Dietary Supplements - Tyrosine Fact Sheet examine-ltyrosine · Examine.com - L-Tyrosine

Use with caution if taking thyroid hormone medications.

drug · Thyroid hormones

CautionModerate

Neden

L-Tyrosine is a precursor to thyroid hormones and may increase levels when combined.

Öneri

Monitor thyroid function and consult a healthcare professional if combining.

nih-ods-tyrosine · NIH Office of Dietary Supplements - Tyrosine Fact Sheet

Avoid in individuals with a history of tyrosinase-positive melanoma.

lab_marker · Tyrosinase-positive melanoma

AvoidLimited

Neden

L-Tyrosine may stimulate melanin synthesis and potentially influence tumor growth in susceptible individuals.

Öneri

Do not use supplemental L-Tyrosine if you have or have had melanoma.

nih-ods-tyrosine · NIH Office of Dietary Supplements - Tyrosine Fact Sheet

Etki mekanizmaları

Nasıl çalıştığına dair kısa açıklamalar

Precursor for catecholamine neurotransmitter synthesis

L-Tyrosine increases dopamine and norepinephrine production under conditions of neurotransmitter depletion, supporting cognitive function during stress.

pubmed-hogervorst2019 · Hogervorst, E. et al., Tyrosine supplementation and cognitive performance: a review, Nutrients, 2019 pubmed-nery2012 · Nery, C. et al., Effect of L-tyrosine on cognitive performance under stress: Systematic review, CNS & Neurological Disorders Drug Targets, 2012