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Tyrosine - 60 capsules

Name: Tyrosine - 60 capsules
Rating: 4.2 (240 reviews)

Regular price £29.99

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World’s 1st 800mg natural tyrosine capsules from fermented corn. Tyrosine is the building block to your reward and pleasure chemical dopamine [1]. Dopamine is also linked to alertness and motivation [2,3].

800mg high-strength tyrosine per capsule
1-a-day. Single capsule dose
Ideal for anyone looking to support dopamine, drive, or achieve more in their day
Tyrosine levels peak 1-2 hours after ingestion [4] with effects lasting up to 8 hours [5]
Natural dopamine booster [1]

Our L-tyrosine supplement is manufactured in the UK under strict GMP, ISO 9001, and ISO 22000 certified conditions in an FDA-registered facility.

44 studies confirm tyrosine supports dopamine

brain feed analysed 44 published trials which confirmed tyrosine supports the production and function of dopamine. Backed by science, proven by research.

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*brain feed does not test or commission studies on animals. This is an analysis of pre-existing studies.

what is tyrosine ?

Tyrosine is a naturally occurring nutrient and the building block for dopamine, the brain’s reward and pleasure chemical [1].

Before it becomes dopamine, tyrosine undergoes a conversion process in the brain. Tyrosine is also the precursor to your thyroid hormone [6].

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what is dopamine? Your motivation molecule

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Dopamine is a neurotransmitter naturally produced in your body. Feeling alert, a sense of accomplishment or the momentum to get things done are all part of dopamine's role. Your dopamine levels are influenced by:

Dietary intake of phenylalanine or tyrosine [7]
Functioning of your brain’s dopamine receptors [8,9,10]
Genetics [11,12,13]
Chronic stress [14]

dopamine benefits

Motivation & alertness

A study found that in the brains of highly motivated individuals, there was an increased release of dopamine in the areas that involve reward and motivation [15].

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Reward & pleasure

When dopamine levels are high, you may experience more pleasure from activities and are more likely to feel the reward after completing a task [4].

track your progress

Track how tyrosine works for you over time. Adapted from research methods used in over 80 clinical trials across 25 years, brain feed’s user-friendly self-assessments deliver near-instant results. Monitor your brain health through a simple 3-step process, included with your first tyrosine order to track results at baseline, 1 day, and 30 days.

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what releases dopamine?

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Before you can release dopamine, ensure your body has enough tyrosine, as adequate production is necessary to reap its effects.Dopamine gets released when you're anticipating a positive outcome or actual physical reward, helping you feel motivated to seek more of those rewarding outcomes [16] including:

Listening to music - The anticipation of and enjoyment from music releases dopamine in your brain's system for decision-making, habit formation and reward processing [17]
Exercise - an extensive review of 15 studies found that physical activity affects dopamine concentrations in the brain[18]

natural l tyrosine source

We use non-GMO corn as the substrate in the fermentation process. After fermentation the tyrosine is extracted to create a 100% plant-based tyrosine isolate.

[1] Daubner, S. C., Le, T., & Wang, S. (2011). Tyrosine Hydroxylase and Regulation of Dopamine Synthesis. Archives of Biochemistry and Biophysics, 508(1), 1–12. https://www.sciencedirect.com/science/article/abs/pii/S000398611000514X?via%3Dihub

[2] Wise, R. A. (2004). Dopamine, learning and motivation. Nature Reviews Neuroscience, 5(6), 483–494. https://www.nature.com/articles/nrn1406

[3] Poffé, C., Robberechts, R., Stalmans, M., Vanderroost, J., Bogaerts, S., & Hespel, P. (2023). Exogenous ketosis increases circulating dopamine concentration and maintains mental alertness in ultra-endurance exercise. Journal of Applied Physiology, 134(6), 1456–1469. https://journals.physiology.org/doi/full/10.1152/japplphysiol.00791.2022?checkFormatAccess=true

[4] Sharot, T., Shiner, T., Brown, A. C., Fan, J., & Dolan, R. J. (2009). Dopamine enhances expectation of pleasure in humans. Current Biology, 19(24), 2077–2080. https://www.cell.com/current-biology/fulltext/S0960-9822(09)01844-2

[5] van de Rest, O., Bloemendaal, M., de Heus, R., & Aarts, E. (2017). Dose-Dependent Effects of Oral Tyrosine Administration on Plasma Tyrosine Levels and Cognition in Aging. Nutrients, 9(12), 1279. https://www.mdpi.com/2072-6643/9/12/127979 Show less

[6] Stejskalova, C., Arrigoni, F., Albanesi, R., Bertini, L., Mollica, L., & Coscia, F. (2025). A conserved acidic residue drives thyroxine synthesis within thyroglobulin and other protein precursors. The Journal of biological chemistry, 301(1), 108026. https://linkinghub.elsevier.com/retrieve/pii/S0021925824025286

[7] Hardman, C. A., Herbert, V. M., Brunstrom, J. M., Munafò, M. R., & Rogers, P. J. (2012). Dopamine and food reward: effects of acute tyrosine/phenylalanine depletion on appetite. Physiology & behavior, 105(5), 1202–1207. https://www.sciencedirect.com/science/article/abs/pii/S0031938411005774

[8] Todd, R. D., & Lobos, E. A. (2002). Mutation screening of the dopamine D2 receptor gene in attention-deficit hyperactivity disorder subtypes: preliminary report of a research strategy. American journal of medical genetics, 114(1), 34–41. https://onlinelibrary.wiley.com/doi/10.1002/ajmg.1619

[9] Richter, A., Richter, S., Barman, A., Soch, J., Klein, M., Assmann, A., Libeau, C., Behnisch, G., Wüstenberg, T., Seidenbecher, C. I., & Schott, B. H. (2013). Motivational salience and genetic variability of dopamine D2 receptor expression interact in the modulation of interference processing. Frontiers in human neuroscience, 7, 250. https://www.frontiersin.org/journals/human-neuroscience/articles/10.3389/fnhum.2013.00250/full

[10] Ghosh, P., Sarkar, K., Bhaduri, N., Ray, A., Sarkar, K., Sinha, S., & Mukhopadhyay, K. (2013). Catecholaminergic gene variants: contribution in ADHD and associated comorbid attributes in the eastern Indian probands. BioMed research international, 918410. https://onlinelibrary.wiley.com/doi/10.1155/2013/918410

[11] Iuhas, A., Jurca, C., Kozma, K., Riza, A. L., Streață, I., Petcheși, C., Dan, A., Sava, C., Balmoș, A., Marinău, C., Niulaș, L., Ioana, M., & Bembea, M. (2023). PAH Pathogenic Variants and Clinical Correlations in a Group of Hyperphenylalaninemia Patients from North-Western Romania. Diagnostics (Basel, Switzerland), 13(8), 1483. https://www.mdpi.com/2075-4418/13/8/1483

[12] Alavanda, C., Ceylan, E. İ., Kılavuz, S., & Çıkı, K. (2024). Comprehensive analyses of phenylalanine hydroxylase variants and phenotypic characteristics of patients in the eastern region of Türkiye. Journal of pediatric endocrinology & metabolism : JPEM, 37(6), 543–552. https://www.degruyterbrill.com/document/doi/10.1515/jpem-2024-0091/html

[13] Tebieva, I. S., Mishakova, P. V., Gabisova, Y. V., Khokhova, A. V., Kaloeva, T. G., Marakhonov, A. V., Shchagina, O. A., Polyakov, A. V., Ginter, E. K., Kutsev, S. I., & Zinchenko, R. A. (2024). Genetic Landscape and Clinical Features of Hyperphenylalaninemia in North Ossetia-Alania: High Frequency of P281L and P211T Genetic Variants in the PAH Gene. International journal of molecular sciences, 25(9), 4598. https://www.mdpi.com/1422-0067/25/9/4598

[14] Bloomfield, M. A., McCutcheon, R. A., Kempton, M., Freeman, T. P., & Howes, O. (2019). The effects of psychosocial stress on dopaminergic function and the acute stress response. eLife, 8, e46797. https://elifesciences.org/articles/46797

[15] Treadway, M. T., Buckholtz, J. W., Cowan, R. L., Woodward, N. D., Li, R., Ansari, M. S., Baldwin, R. M., Schwartzman, A. N., Kessler, R. M., & Zald, D. H. (2012). Dopaminergic Mechanisms of Individual Differences in Human Effort-Based Decision-Making. The Journal of Neuroscience, 32(18), 6170–6176. https://www.jneurosci.org/content/32/18/6170

[16] Bromberg-Martin, E. S., Matsumoto, M., & Hikosaka, O. (2010). Dopamine in motivational control: rewarding, aversive, and alerting. Neuron, 68(5), 815–834. https://www.cell.com/neuron/fulltext/S0896-6273(10)00938-4

[17] Salimpoor, V. N., Benovoy, M., Larcher, K., Dagher, A., & Zatorre, R. J. (2011). Anatomically distinct dopamine release during anticipation and experience of peak emotion to music. Nature neuroscience, 14(2), 257–262. https://www.nature.com/articles/nn.2726

[18] Marques, A., Marconcin, P., Werneck, A. O., Ferrari, G., Gouveia, É. R., Kliegel, M., Peralta, M., & Ihle, A. (2021). Bidirectional Association between Physical Activity and Dopamine Across Adulthood-A Systematic Review. Brain sciences, 11(7), 829. https://www.mdpi.com/2076-3425/11/7/829

ingredients

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Tyrosine

isolated from fermented corn

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Rice bran flour

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Vitamin b12

Capsule

purity promise™

Purity has four components:

1. brain feed ensures the high quality of our extracts and isolates through rigorous testing
2. We monitor critical control points during production for quality control
3. We guarantee the amount of active ingredient(s)
4. Preserve the bio-active compounds for the duration of their shelflife.

Click here to read more

FAQ's

How/when should I take it?

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Take 1 capsule 800mg tyrosine supplement on an empty stomach.

Best food sources of tyrosine ?

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tyrosine is an amino acid found in protein-rich foods such as meat, fish and dairy. However, 100 grams of soybeans also contains 470mg of tyrosine whilst onions, mushrooms and beans can complement dietary consumption.

How long does it take to have an effect?

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Tyrosine levels peak between 1-2 hours post-ingestion [2]. Feelings of fearfulness were abolished 59 minutes post-ingestion amongst university students undertaking a fear conditioning task [3]

l tyrosine vs tyrosine - is there a difference ?

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Tyrosine and l-tyrosine are the same compounds - they refer to the same amino acid and the terms are interchangeable

Are there any side effects of tyrosine ? Is tyrosine safe?

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Tyrosine has US FDA GRAS status “generally recognized as safe”.

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Dec 18, 2024

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