7 Benefits of L-Tyrosine For Hair Loss

L-tyrosine is a non-essential amino acid that reportedly is good for hair loss. But what exactly is Tyrosine and how do you take it? In this article, we’ll discuss the benefits of l-Tyrosine for hair loss and explain the pros and cons of taking this supplement.

L-Tyrosine benefits for hair

In short, L-tyrosine is an amino acid that helps build protein, the building blocks of hair. L-tyrosine has shown great success in encouraging hair regrowth in areas affected by Alopecia or hair loss. 

L-tyrosine, or simply tyrosine, is a non-essential amino acid. It is used to build proteins, enzymes, thyroid hormones, and melanin.

It can also help produce noradrenaline and dopamine, while also promoting hair growth in areas that are experiencing hair loss. 

Deficiency of Tyrosine 

While tyrosine is a normal part of our bodies, sometimes our levels can decrease and cause a deficiency. This is why some people then choose to take l-tyrosine supplements. 

A tyrosine deficiency is usually caused by high-stress levels.

These levels can reduce the production of tyrosine which then causes a decrease in the stress hormones that usually fight against stress-associated symptoms. 

7 L-Tyrosine Benefits for Hair Loss

7 L-Tyrosine Benefits for Hair Loss

There are many benefits l-tyrosine has when it comes to your hair and hair loss. These benefits include:

Increased Melanin

Tyrosine contributes to the creation of melanin and melanin helps provide color to our hair, as well as our skin. 

Helps to Stop Premature Graying

Since tyrosine helps to encourage the production of melanin, which helps to give our hair its color, it can help fight against premature graying.

Helps in Hair Regrowth

When our bodies do not make enough natural tyrosine, it can lead to stress-related hair loss such as trichotillomania, alopecia areata, and telogen effluvium.

By ensuring that this amino acid is a part of your diet, you’re helping to encourage hair regrowth in cases where you’re suffering from hair loss. 

Improved Blood Supply

L-tyrosine helps to encourage blood supply to our hair which helps with hair growth with capillary microcirculation.

Strengthens Hair 

The amino acid l-tyrosine also helps in creating stronger and healthier hair by improving the growth of hair follicles.  

Helps in Preventing Hair Loss 

L-tyrosine helps in preventing hair loss by making up for hormones affected by stress. The decrease in stress-related hormones can cause hair loss, but taking l-tyrosine can help to stop it. 

Reduces Inflammation 

Adding more l-tyrosine to your diet can help in decreasing inflammation which can attribute to hair loss and a sensitive scalp. 

What Other Benefits Does L-Tyrosine Have?

What Other Benefits Does L-Tyrosine Have

There are several other benefits of l-tyrosine other than the benefits it has on your hair and skin. 

These benefits include helping with mood, depression, and sleep. 

PKU Treatment 

PKU, or phenylketonuria, is a genetic condition that happens when a defect is present in the gene that helps to produce the enzyme phenylalanine hydroxylase. 

This genetic condition is rare, affecting roughly 16,500 people in the USA today. 

While the best way to combat PKU is to stay on a special diet, those suffering from PKU can benefit from taking l-tyrosine, especially if a tyrosine deficiency is present which can result from PKU. 

Decreases Mental Fog

Another benefit of l-tyrosine is that it helps decrease mental fog while promoting mental performance. Mostly, this helps when your mental alertness is affected by stress, but it has also shown to be beneficial in elderly individuals who are suffering from mental decline.

In fact, there have been studies concluding that tyrosine can help in reversing mental decline. it can also assist in the improvement of cognitive function when dealing with short-term and mentally stressful events.  

Helps with Depression 

While there are mixed studies on the benefits of tyrosine in regards to depression, many people who have increased their tyrosine intake have experienced an uplift in their mood. 

Tyrosine is especially beneficial to those who suffer from low levels of adrenaline, dopamine, and noradrenaline because tyrosine helps to replenish these neurotransmitters. 

How Do You Use L-Tyrosine?

L-tyrosine is meant to be taken three times daily and 30 minutes prior to your meals. Adding vitamins B6, B9, and copper can assist tyrosine in converting into vital chemicals for the brain.  

Adults should consult with their doctor concerning what dosage to take and these supplements should never be given to a child without first consulting with their pediatrician or doctor. 

Are There Risks in Using L-Tyrosine?

Are There Risks in Using L-Tyrosine

Like with most medications and supplements, l-tyrosine comes with its own risks and warnings. 

Therefore, it is always recommended to discuss taking l-tyrosine with your doctor before adding it to your supplemental intakes. 

This is especially true if you are suffering from an overactive thyroid, Graves disease, or if you are pregnant or currently breastfeeding. 

With that being said, there are a few common side effects that you should be aware of when considering taking l-tyrosine. 

These side effects include: 

  • Feeling nauseous 
  • Heartburn or indigestion 
  • Sudden headaches
  • Joint pain or discomfort
  • Fatigue 

Medication Interactions

Along with the common side effects, there are a few medication interactions that you should be aware of. 

Again, if you take these medications, be sure to consult with your doctor before adding an l-tyrosine supplement to the mix. 

These medications include: 

Monoamine oxidase inhibitors

Monoamine oxidase inhibitors, also known as MAOIs, are often prescribed as a treatment for depression. 

MAOIs have shown significant interference with enzymes that help in eliminating excess l-tyrosine, thus taking MAOIs with l-tyrosine supplements can be dangerous and cause an increase in your blood pressure.

T3 and T4

The thyroid hormones T3 and T4, also known as triiodothyronine and thyroxine, help in controlling the metabolism. L-tyrosine can increase the levels of these thyroid hormones which can be dangerous. 


Also known as L-dopa is a medication that is prescribed to help in the treatment of Parkinson’s. 

Both L-dopa and L-tyrosine rely on absorption in the small intestine, thus, taking these two medications together may decrease L-dopa’s effectiveness against Parkinson’s. 

While these two medications can be taken together, it is recommended to take these medicines hours apart to prevent them from interfering with one another.


Taking l-tyrosine, especially if you are low on certain neurotransmitters, and hormones, or if you lack natural tyrosine, can help to encourage hair regrowth in situations where hair loss is present due to stress-related disorders like Alopecia. 

While some benefits when taking l-tyrosine need further studies to conclude whether or not this supplement actually helps, the l-tyrosine benefits for hair loss are clearly there. 

Frequently Asked Questions (FAQ)

How Do I Naturally Increase Tyrosine? 

You can increase your tyrosine levels naturally and without taking supplements by eating foods that contain the l-tyrosine amino acid. These foods include beef, chicken, fish, pork, tofu, dairy products such as milk and cheese, seeds and nuts, beans, and whole grains.

Should I Worry if I Forget to Take a Dose?

There’s no need to worry if you happen to forget to take a dose of your l-tyrosine supplement. You can go ahead and skip the dose if it’s too close to when you’re scheduled for your next one; otherwise, never take an extra dose to make up for the missed one.

What Happens if I Notice an Allergic Reaction?

If you start to notice the signs of an allergic reaction such as difficulty breathing, hives and swelling in the face, lips, throat, and tongue, then you should seek immediate emergency attention. 

Can I Overdose on Tyrosine? 

Yes, an overdose can occur with most medications and supplements. If you suspect you or a loved one have overdosed on l-tyrosine, seek emergency medical assistance or call 1-800-222-1222 to speak with the Poison Help line.


  • https://www.webmd.com/diet/health-benefits-l-tyrosine
  • https://www.healthline.com/nutrition/tyrosine

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Dee Poulsen

Dee has been following the Curly Girl Method for over four years and is our in-house Curly Girl expert. She has a keen interest in natural haircare and has tried and tested her share of CGM products. She has a photographic memory of most sulfate and silicone-free hair products available on the high street and she's always happy to recommend you her favorites.