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L-Tyrosine Supplement


L-Tyrosine is a non-essential amino acid that is used in protein synthesis and for the biosynthesis of dopamine and norepinephrine and may interact with tyrosine kinase receptors. It has the chemical structure C9H11NO3 and has a molar mass of 181.191 g/mol.


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L-Tyrosine Benefits and Uses


L-Tyrosine supplements are beneficial for improving tyrosine levels as an amino acid supplement. Anecdotally, it may offer benefits similar to other amino acid supplements and brain-boosters - for example, effects on mental performance and working memory.


Where to Buy L-Tyrosine Online?


LiftMode offers a variety of unit sizes of L-Tyrosine including 100 grams (3.54 Oz), 300 grams (10.58 Oz), and 1000 grams (35.27 Oz) units. Our L-Tyrosine supplement is guaranteed at 98+% purity and ships with a third-party certificate of analysis.


All orders are covered by our 90-days refund/reshipment policy to ensure the highest quality.


Shipping restrictions: No shipping restrictions currently apply to this product and we are able to ship internationally. At checkout, the available shipping options for your location will be available.




L-Tyrosine is known by a variety of additional names, including:



2-Acetylamino-3-(4-Hydroxyphenyl)-Propanoic Acid




N-Acetyl L-Tyrosine

N-Acétyl L-Tyrosine


2-amino-3-(4-hydroxyphenyl)propionic acid


Scientific Consensus:


L-Tyrosine is a non-essential amino acid and is considered safe for use by most people, when taken at the recommended serving size. Some side effects may include nausea, upset stomach, and headaches, at large servings.


L-Tyrosine supplements may affect thyroid hormone levels for people with an overactive thyroid.


Warning: There is not enough research about the safety of L-Tyrosine for pregnant and breastfeeding women. Do not use this supplement if you have any underlying medical conditions.




All dietary supplements have risks. Please ensure that you are familiar with the latest research on effects, side effects, benefits, and uses of a supplement before buying it. There are several good informative websites available for further research, such as and RXlist.


Store in a cool, dry place. Keep out of reach of children. Do not exceed the recommended serving size. Exceeding the recommended serving size may result in side effects. If you have any underlying medical conditions or are taking any medication, please consult a medical professional before using this supplement. 


Please note that this content was not written by a medical professional and has not been reviewed by the FDA.


buy l-tyrosine supplement


How We Research Our Content

Our content is written using meticulous research methods and claims are backed by links to scientific references, wherever possible. The author and editors of Liftmode's Research Team have strong academic backgrounds in microbiology, physiology, and biochemistry.

Content Updated On: November 1, 2019




  • Jongkees, B. J., Hommel, B., Kühn, S., & Colzato, L. S. (2015). Effect of tyrosine supplementation on clinical and healthy populations under stress or cognitive demands—A review. Journal of Psychiatric Research, 70, 50–57. doi:10.1016/j.jpsychires.2015.08.014 


  • Bloemendaal, M., Froböse, M. I., Wegman, J., Zandbelt, B. B., van de Rest, O., Cools, R., & Aarts, E. (2018). Neuro-Cognitive Effects of Acute Tyrosine Administration on Reactive and Proactive Response Inhibition in Healthy Older Adults. eNeuro5(2), ENEURO.0035-17.2018. doi:10.1523/ENEURO.0035-17.2018

  • Young S. N. (2007). L-tyrosine to alleviate the effects of stress?. Journal of psychiatry & neuroscience : JPN32(3), 224.


  • 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. Nutrients9(12), 1279. doi:10.3390/nu9121279