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May 11, 2021 3 min read

Have you been feeling more stressed out lately? Or have your mood and energy levels tanked in the last few months? What about your focus? Are you finding it harder than usual to concentrate?

Managing the daily stressors of life can be hard, but there is a lot we can do with diet, lifestyle and supplementation to help support our stress, energy and focus levels. In fact, there’s one important amino acid that can help you get back on track. In this article we’re going to look at what l-tyrosine is, what is specifically used for, and how it can help you get that pep back in your step. 

What is L-Tyrosine?

L-Tyrosine is one of 20 key amino acids that helps us synthesize proteins — the essential building blocks of our body and mind. L-Tyrosine is one of 11 “non-essential” amino acids in the body, meaning that it can be made by humans so it’s not considered essential to our diets. We actually make l-Tyrosine from another amino acid, phenylalanine.

But just because we don’t need to get tyrosine from our food for survival, doesn’t mean it doesn’t have health benefits. Like most amino acids, the biggest source of high tyrosine foods is found in animal products such as beef, pork, chicken and dairy products as well as legumes, nuts/seeds and some whole grains.

L-Tyrosine is an important precursor to certain neurotransmitters and other chemicals in the body like dopamine (our “feel good” hormone”), epinephrine and norepinephrine, which are all involved in our body’s energy and mood response. L-Tyrosine can also positively impact our thyroid and speed up our metabolism. 

What is L-Tyrosine used for?

Supplementally, L-Tyrosine is used for many reasons, especially its stress-reducing, mood-boosting, and metabolism-driving benefits. Let's dive a little deeper.

  • Reduce stress levels and depression. While we can’t eliminate stress forever, we can find ways to help our bodies better respond to ongoing stressors. One of the main ways tyrosine can help us better adapt to stress is by helping the brain release and regulate those “feel good” chemicals: dopamine, which controls our reward and pleasure centers of the brain, and adrenaline, which controls our fight or flight stress response.Research shows that l-tyrosine can help bring up levels of catecholamines, which can become depleted when we experience certain physical stressors like being exposed to cold or high altitudes or extended wakefulness. L-Tyrosine has also been touted as a natural antidepressant because itacts as a precursor to specific neurotransmitters that control mood, irritability, and fatigue.  

  • Improve cognitive functioning. Similarly to how L-Tyrosine works to modulate our stress response, it can also help reduce mental fatigue, and boost cognitive functioning and memory. The ability of L-Tyrosine to improve alertness can be especially helpful for night shift workers. Inone study, people who were sleep deprived because of overnight work were given 150 milligrams of tyrosine per kilogram of body weight. These participants showed improved alertness for about three hours compared to the placebo group. Asecond study of 22 women showed tyrosine significantly improved memory performance while carrying out a mentally taxing task, making this amino acid a good option for those with ongoing brain fog who want to boost their alertness.

  • Boost energy and aid in weight loss. While there aren’t any studies showing a direct correlation between L-Tyrosine supplementation and weight loss, it can boost metabolism in some individuals, which would allow the body to burn calories more efficiently and effectively. It does this by acting on our neurotransmitters norepinephrine and epinephrine. It’s also used to make a popular thyroid hormone,thyroxine, which helps regulate our metabolism.

  • You can read more about any potential side effects or drug interactionshere

    Why Superior Labs L-Tyrosine?

    At Superior Labs, quality is our top priority. Our L-Tyrosine capsules contain 500 mg of pure L-Tyrosine and are free of magnesium stearate, dioxides, preservatives, or other potentially harmful artificial ingredients. This means you can rest easy knowing you are receiving the safest, most efficient, and chemical-free product possible.




    Nicole Cieslak is a functional nutritional therapy practitioner and certified personal trainer at Fit Foodist Nutrition specializing in gut health and hormone balance. Every day she strives to help people overcome chronic digestive and hormonal issues by getting to the root cause of their health imbalances. Through personalized diet, lifestyle and nutritional supplement recommendations, she empowers her clients to find freedom from suffering so they can reclaim their happiness and health. Learn more about her at and follow her on Instagram at @fitfoodist_foundations for free nutrition, fitness and nontoxic living advice.