L-Tyrosine Powder
Pure amino acid precursor to dopamine and norepinephrine that supports focus, mental energy, stress resilience, and positive mood.
L-Tyrosine Powder
Pure amino acid precursor to dopamine and norepinephrine that supports focus, mental energy, stress resilience, and positive mood.
- Pure L-Tyrosine Amino Acid Powder
- Third-Party Lab Tested For Purity
- Supports Focus and Mental Energy
- 500mg Per Serving Dosage
3rd Party Lab Tested & Verified
See Why ND L-Tyrosine Is The Best
Updated On: 05/05/2026
Benefits
When You'll Notice Effects
2-3 Weeks (With Immediate Effects)
-
Focus
-
Mental Energy
-
Stress
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Mood
WHY ND L-TYROSINE?
How To Take
500mg (Per Serving)
Flexible
With Or Without Food
1 Time Daily
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About L-Tyrosine Powder
L-Tyrosine is a nonessential amino acid that serves as a precursor to key neurotransmitters including dopamine, norepinephrine, and epinephrine. Your body naturally produces tyrosine from phenylalanine, but supplementation supports optimal levels during periods of high demand. L-Tyrosine helps maintain healthy catecholamine production, supporting cognitive function and mood balance.
Our L-Tyrosine Story
Many people need reliable tyrosine supplementation to support their neurotransmitter pathways, especially during demanding periods. While tyrosine occurs naturally in foods like almonds, chicken, and avocados, dietary intake alone often falls short of optimal levels. Finding a pure, high-quality form that delivers consistent bioavailability presented a significant challenge.
We secured pharmaceutical-grade L-Tyrosine that meets strict purity standards. We chose the free-form amino acid over acetylated versions for direct utilization in the tyrosine hydroxylase pathway. Every batch undergoes comprehensive third-party testing to verify both identity and purity, ensuring you receive exactly what's on the label. This quality control approach means our L-Tyrosine provides reliable support for focus and mental clarity when you need it most.
Benefits
- Supports Focus & Attention: L-Tyrosine serves as a precursor to norepinephrine, a catecholamine neurotransmitter that enhances mental alertness and concentration during demanding tasks.
- Supports Alertness & Mental Energy: By supporting dopamine and norepinephrine production, tyrosine helps maintain cognitive performance and mental clarity throughout the day.
- Helps Manage Stress: During periods of physical or mental demand, tyrosine supplementation supports the body's natural ability to maintain balanced neurotransmitter levels when they become depleted.
- Supports Balanced Mood: As a building block for monoamine neurotransmitters including dopamine, L-Tyrosine helps promote positive mood and emotional well-being.
L-Tyrosine's effectiveness stems from its role in the rate-limiting step of catecholamine synthesis, where the tyrosine hydroxylase enzyme converts tyrosine into L-DOPA. This regulatory mechanism allows your body to modulate neurotransmitter production based on demand, making tyrosine particularly valuable during periods of heightened stress or cognitive challenge when these brain chemicals become temporarily depleted.
Quality and Standardization
- High-Purity L-Tyrosine: Our L-Tyrosine powder is lab-tested and verified for both product purity and identity through rigorous analytical testing protocols.
- Third-Party Testing: Each batch undergoes comprehensive testing at accredited laboratories to ensure consistent quality, potency, and freedom from contaminants.
- Standardized Manufacturing: Produced in cGMP certified and FDA registered facilities right here in the USA, maintaining strict quality control standards throughout the manufacturing process.
- Certificate of Analysis: We provide detailed COAs for every lot, allowing you to verify the exact specifications and purity of your specific bottle through our third-party labs.
Mechanism of Action
- Neurotransmitter Precursor Pathway: L-Tyrosine undergoes enzymatic conversion through tyrosine hydroxylase to form L-DOPA, which then converts to dopamine supplements and subsequently to norepinephrine and epinephrine, supporting the catecholamine synthesis pathway that regulates alertness and stress response.
- Rate-Limiting Enzyme Regulation: The body controls neurotransmitter production by up-regulating or down-regulating the tyrosine hydroxylase enzyme, making this conversion step a natural bottleneck that determines how efficiently tyrosine translates into active catecholamines.
- Stress-Response Modulation: During periods of high demand, tyrosine supports the replenishment of catecholamine stores that become depleted under stress, helping maintain optimal neurotransmitter levels when the body's natural production may be insufficient.
- Protein Synthesis Support: As one of the 22 amino acids essential for cellular protein synthesis, tyrosine contributes to the structural foundation of enzymes and proteins throughout the nervous system, supporting overall brain health supplements function.
Overview of the Science
Research indicates that L-tyrosine supplementation supports cognitive function during periods of stress, with studies demonstrating improved working memory performance under demanding conditions [1][2]. The amino acid appears particularly beneficial for maintaining mental clarity when facing acute stressors, as shown in studies where participants experienced enhanced cognitive resilience during cold exposure and high-pressure tasks [3][4]. L-tyrosine's role as a precursor to catecholamines like dopamine and norepinephrine helps explain its ability to support optimal brain function when these neurotransmitter supplements are in high demand.
The enzymatic conversion pathway from L-tyrosine to dopamine represents a rate-limiting step in catecholamine synthesis, making adequate tyrosine availability crucial for maintaining neurotransmitter balance [5]. Studies suggest that tyrosine depletion can negatively impact cognitive performance, while supplementation helps restore optimal function in healthy adults [6][7]. This makes L-tyrosine particularly valuable for individuals seeking cognitive support during mentally demanding periods or high-stress situations.
[1] Fernstrom JD, Fernstrom MH. Tyrosine, phenylalanine, and catecholamine synthesis and function in the brain. J Nutr. 2007;137(6 Suppl 1):1539S-1547S.
[2] Jongkees BJ, Hommel B, Kühn S, Colzato LS. Effect of tyrosine supplementation on clinical and healthy populations under stress or cognitive demands-A review. J Psychiatr Res. 2015;70:50-57.
[3] Hase A, Jung SE, aan het Rot M. Behavioral and cognitive effects of tyrosine intake in healthy human adults. Pharmacol Biochem Behav. 2015;133:1-6.
[4] Colzato LS, Jongkees BJ, Sellaro R, Hommel B. Working memory reloaded: tyrosine repletes updating in the N-back task. Front Behav Neurosci. 2013;7:200.
[5] Shurtleff D, Thomas JR, Schrot J, Kowalski K, Harford R. Tyrosine reverses a cold-induced working memory deficit in humans. Pharmacol Biochem Behav. 1994;47(4):935-941.
[6] Dollins AB, Krock LP, Storm WF, Wurtman RJ, Lieberman HR. L-tyrosine ameliorates some effects of lower body negative pressure stress. Physiol Behav. 1995;57(2):223-230.
[7] Young SN. L-tyrosine to alleviate the effects of stress? J Psychiatry Neurosci. 2007;32(3):224.
Ingredients
L-Tyrosine:
- Free-form L-Tyrosine amino acid
- 500mg per serving
- High-purity crystalline powder
Our L-Tyrosine powder provides the free-form amino acid in its most bioavailable state, ensuring optimal absorption and utilization. The crystalline powder format offers precise dosing flexibility and mixes easily into beverages or protein shakes. This pharmaceutical-grade amino acid undergoes strict quality control protocols to deliver consistent potency and purity for reliable neurotransmitter supplements support.
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