Why Are L-Tyrosine Supplements So Good?

L-Tyrosine occurs naturally in the body, although it is not an essential amino acid. It’s considered to be non-essential simply because the body is capable of naturally producing it by processing phenylalanine (another amino acid). However, boosting your body’s levels of L-Tyrosine may still prove to offer many different benefits.

The recommended daily allowance for L-tyrosine as well as phenylalanine is about 33 milligrams per kilogram or 2.2 pounds of body weight. This equals 15 milligrams of the two amino acids for every pound of your body’s weight. The natural levels of L-Tyrosine can be supplemented when you eat certain types of food such as dairy, cheese, turkey, fish, chicken, eggs, beans, nuts, oats, and wheat.

Yes, you can boost your L-Tyrosine by eating cheese! It is for this reason that L-Tyrosine is often called the “cheese” amino acid. Tyrosine originates from Tyros, the Greek word for cheese. The name was given by Justus von Liebig, who is a chemist from Germany. He discovered L-Tyrosine in casein, a protein that is derived from yummy cheese.

Why is L-Tyrosine Important?

Your body uses L-Tyrosine in several different processes, mostly in the production of the below:

  • Thyroid hormones
  • Neurotransmitters
  • Adrenaline and other catecholamines
  • Proteins
  • Melanin (pigment of your skin)
  • Chemical messengers that the brain uses in its function
  • Norepinephrine and dopamine, as well as other brain chemicals

What Are The Benefits of L-Tyrosine?

Of course, we must also talk about the benefits of this amino acid to the body. If you’re wondering what exactly L-Tyrosine does for you, here’s everything you need to know:

  • Improves your brain’s function – Tyrosine is known to help your brain when it comes to focus and alertness. If you struggle to keep your focus and clarity, L-tyrosine supplements might be able to help. A study was conducted in 2010, with 19 healthy subjects who were college students. The results of the study support this point.
  • Helps in treating phenylketonuria – One of the biggest and most well-known benefits of this amino acid is the fact that it helps treat phenylketonuria and alleviate any related symptoms. Phenylketonuria is a disorder of genetics where your body cannot properly process phenylalanine. This results in the body’s inability to produce tyrosine. If you have this condition, you may experience symptoms such as hyperactivity, seizures, and skin conditions.
  • Has the potential to boost your body’s physical endurance – A study was conducted in 2011 with the subjects being 8 healthy males. The study showed L-Tyrosine’s effects on performance when it comes to exercise. The volunteers consumed drinks containing tyrosine. The results showed that the volunteers experienced a significant boost in their endurance despite exercising in hot conditions. Another study that was done in 2012, however, showed results that contradicted these initial findings. Therefore, we cannot conclusively say this amino acid works for this purpose. We can only say that there is potential for this effect to be observed.
  • It can boost your cognition in stress conditions – there have been fifteen clinical studies and trials done to investigate L-Tyrosine’s effects on behavior and cognition. Results were found to be rather promising – Tyrosine was found to prevent catecholamine depletion, therefore boosting mental function despite demanding and stressful conditions. People who are exposed to extreme distractions, multitasking, and conditions requiring focus can surely benefit from this product.
  • Can help your mood – mood disorders and depression caused by imbalances in brain chemistry can be helped by Tyrosine because it helps in the production of brain chemicals. If you are looking for a mood-boosting supplement, look no further than this one.
  • Improve your thyroid – Your body produces thyroid hormones from iodine, tyrosine, and selenium. With additional L-Tyrosine intake from supplements, you may experience a significant boost in your body’s thyroid health.
  • Fight narcolepsy – If you struggle to stay awake and find your body involuntarily falling asleep at inconvenient times, L-Tyrosine might be able to help. Again, this amino acid helps the brain chemistry’s balance.
  • Weight-loss support – If you are struggling to lose weight, Tyrosine supplements can help by providing your body with catecholamines. Better thyroid health also improves your metabolism, allowing you to more easily lose weight.
  • Other benefits – Tyrosine is often found in other applications in alternative medicine. It’s usually prescribed or advertised as a remedy (all-natural of course) for various health problems such as Parkinson’s disease, Alzheimer’s disease, Stress, Chronic Fatigue Syndrome, Stroke, and heart disease.

Are There Any L-Tyrosine Side Effects?

Generally, L-tyrosine supplements are safe to take. Not many negative side effects have been observed from the use of this supplement by adults as long as it is taken in the recommended dose for a maximum of 3 months per cycle.

However, if this supplement is taken in higher non-recommended doses, there may be some observable side effects such as hives, increased blood pressure and heart rate, breathing difficulty, swelling of the lips, throat, tongue, or face, heartburn, headache, nausea, and joint pain. If you find yourself experiencing any of the above symptoms when taking this supplement in any dosage, it may be best to discontinue use and consult your doctor before you continue.

Additionally, you may need to consider additional precautions if you are nursing or pregnant. Although there are no reported negative effects on pregnant or nursing women as well as their children, it is best to stay on the side of caution. Also, if you already have a noticeably higher amount of thyroid hormones, you may want to avoid L tyrosine because it may cause hyperthyroidism which can then lead to many other problems.

Does L tyrosine interact with other substances?

There are several different interactions that you should keep in mind when it comes to L tyrosine. For example, you may not want to combine this supplement with other stimulant medicines or substances because, on its own, L tyrosine is already considered a stimulant. It may also negatively interact with Levodopa, medicine that is used to treat the symptoms of Parkinson’s disease. Finally, if you are currently on thyroid medication, please do avoid taking the supplement as it may cost further issues.

What’s the dosage of this supplement?

The right dosage for this supplement completely depends on what type you are taking. Your goals also matter when it comes to considering what dose you need. Before you begin taking the supplement, check the label of the product to ensure you are taking it as directed. If you know that you have health conditions (and even if you don’t), we recommend that you see your physician 1st and ask for their advice before beginning the use of this product.

However, we have found from online sources that L tyrosine is usually taken at dosages of 100 to 150 milligrams per kilo of body weight every day. This is if it is used as a stress reducer.

Another thing that we have found is that if you require taking higher doses of this supplement, it is better to split the dose in half and take it in separate times of the day.

How much does L-tyrosine cost?

The supplement is most commonly available as a powder or a capsule. Generally, the price is about 15 to $20.00 for 300 capsules containing 500 milligrams each. The average cost is the same for high-quality powdered L tyrosine.


It can be said that tyrosine holds a very vital role in the health and balance of your body and your brain. Therefore, it can be beneficial in certain conditions to take this supplement. It’s truly no surprise that this amino acid is gaining popularity of late, especially in rather health-conscious individuals.

If you plan to take this supplement, remember that you should be on the lookout for any possible side effects. It is best to consult your doctor before beginning treatment, although these natural supplements should have no real negative side effects when taken as directed.