L-THEANINE – What benefits it holds in 2021 – Let’s Learn!

L-Theanine is a form of amino acid. The human body cannot get/create these particular form amino acids on its own. But you can find this natural compound in a few types of mushrooms, black tea, and green tea leaves.

L-theanine is also available in the form of a supplement. L-theanine has a variety of benefits like it decreases the level of stress, and improves the sleep cycle.

We will be discussing more benefits in detail later on.

This article will provide you with more than enough information about L-theanine. Thus, go through it and increase your knowledge about this magical compound.

How does L-Theanine work?

You might be thinking that how L-theanine will work in your body and provide you with numerous benefits?

To answer this question, we will be explaining the workings of L-theanine in detail. There is still confusion about working if the nootropic supplement.

Many of the neuroscientists are working on this issue so that they can get a clear answer. As we all know, the main purpose of this nootropic supplement is to decrease stress and provide the consumer with maximum comfort. [1]

Whenever a person orally takes this supplement, the L-theanine element in the capsule enters the central part of the brain. It quickly absorbs in the blood of the consumer.

After reaching the brain, the supplement starts its task. It helps to increase the alpha brain wave and the efficiency of the brain.

This increase leads to improved mental strength along with alerting ability. You will notice a change in your focusing capability too.

After entering the tissue of the brain, L-theanine activates the receptors and neurotransmitters. These receptors and transmitters are responsible for managing the levels of stress and enhancing the pleasure level and concentrating skill of the person.

L-theanine reaches the gamma-aminobutyric acid, also known as GABA neurotransmitter.

It is one of the essential neurotransmitters present in the central part of the brain. It protects the cells of the brain from over stimulating. This element also works as a shield against the damage, which can harm the neurons due to oxidative stress.

This prevention, in turn, makes your brain calm and relaxed. You will feel more peaceful and stress-free. It eliminates all types of tension and stress that can damage your brain.

The L-theanine element also helps to increase the level of serotonin in the body. Serotonin is helpful in maintaining the waking and sleeping cycle of any person.

It supports the consumer in improving his mood and temper by increasing the dopamine level and norepinephrine level of the brain. You will feel happy and better after taking these supplements.

It also produces nitric acid that helps to fight against heart disease and improve heart health. It functions like a vasodilator, which manages the blood vessels.

Stacking of L-Theanine

Combining L-theanine with other supplements will provide you with a better result. L-theanine has its advantages. But stacking it with other capsules can increase its advantages.

Some of the best and most effective stacking examples of L-theanine are present below.

1) L-Theanine and Caffeine

A combination of L-theanine and caffeine produces a highly efficient stack (synergy). It can help you to improve your cognitive skills, focus ability, and responding capability. It also increases the attention capacity of the user. [2]

One of the interesting facts about this combo is that L-theanine removes a few of the negative effects of caffeine. You can feel more comfortable and peaceful after taking this stack supplement.

Moreover, it enhances your memory and increases the levels of energy.

This stack supports suppressing and stress and getting a happy mood. It motivates you towards positivity. This L-theanine and caffeine stack also serves as an anti-depressant.

But you need to maintain the ratio of both products. The recommended ratio is 2:1 (L-theanine-Caffeine).

If you are taking 50 mg of L-theanine, then be sure that you do not take caffeine more than 25 mg. Similarly, if you don’t drink coffee, then start with a small dosage of caffeine.

2) Stack of L-Theanine and Extract of Green Tea

Since we know that L-theanine is a derivation from the leaves of the green tea plant, it makes a great stack with green tea.

This combination of L-theanine and green tea leaves can provide you with a lot of benefits. This nootropic supplement supports you in relaxing and comforting. It improves the cognitive skills of the consumer.

There are numerous benefits to this stack. It helps to maintain the sleep cycle. People can also use it to reduce their weight.

3) L-Theanine and 5-HTP

5-HTP is also known as 5-Hydroxytryptophan. It is an amino acid (natural) that activates the neurotransmitter serotonin.

This highly effective combo works as a mood lifter and provides a lot of advantages in enhancing the mood of the user.

Thus, it will help you to create a peaceful environment and stay calm at the same moment.

Dosage of L-theanine

You must be aware that L-theanine gives its best results if you are using it with caffeine. But some people might face issues due to this combination.

They can suffer anxiety and may not be able to gain the benefits of L-theanine.

Does the question arise that what dosage of L-theanine is suitable for you?

You should know that L-theanine is not medicine. Thus, there are no such official instructions available about the dosage. But do keep in mind that an over dosage can cause some serious issues.

The recommended dosage of L-theanine is 50 mg to 200 mg per day.

If you are trying L-theanine for the first time, it will be better that you start with 50 mg dosage every day. Increase your dosage after trying it for several days. But do not exceed the 20 mg limit.

Benefits of L-theanine

It is necessary to know every single benefit the product will provide you before buying it. These benefits help you in making your decision about buying the product. [3]

The same goes for the L-theanine supplements. You might be familiar with most of the benefits. But to make your decision easy, we will be putting light on some of the advantages of L-theanine. Let us have a look at them.

1) Stress Suppressor

Now, starting with the basic purpose of this nootropic supplement.

You might not know that L-theanine supplements are one of the fastest-selling and natural supplements available in the market. The reason behind this fame is that this nootropic supplement helps to relax the consumer.

It works like a magic potion and decreases, or you can say it eliminates the stress from your life. It helps you to create a peaceful environment for yourself.

The nootropic supplement improves the mood of the consumer, along with enhancing the calmness of the mind. It minimizes the indications that can cause depression, nervousness, and anxiety.

 In a nutshell, this supplement fills your mind with positivity and motivation.

2) Improves the Performance of the Brain

The L-theanine nootropic supplement supports the cognitive functions by improving the health of the brain. It protects the brain from any further oxidative stress. The supplement also prevents neurons from facing any harm or damage due to free radicals.

The nootropic capsule supports the growth of nerves. According to some recent research, the supplement has helped a lot the patients who are suffering from Alzheimer’s illness. It provides numerous effects (positive) on the brain, which helps in improving the cognitive functions.

Patients with dementia and other neurodegenerative diseases can also use this supplement to treat their disorders. It is useful for treating Parkinson’s patients due to nerve growth ability.

Scientists have also discovered that L-theanine can support a person to get better physical and mental strength (health).

According to them, these capsules provide neuroprotective features that help in brain functionality. It aims to maintain the reaction and attention time of the consumer. You can use it with caffeine to get a better focusing capability.

3) Boosts the Immune System

Nootropic capsules that contain L-theanine help to boost the immune mechanism of the body.

Consumers will be able to fight against diseases and illness in a better way. Many of the doctors suggest that L-theanine supplements can help a person in making the immune system strong and preventing the consumer from common issues like colds, nausea, and flu.

It serves as an anti-inflammatory capsule increasing the potential of the user to fight against illness.

If you want to increase the strength of your immune system, then you should take these supplements regularly after consulting it with your doctor. It will act as a resistor against fever and other diseases.

4) Reduces Blood Pressure

As we all know, high blood pressure can lead you to several health issues. You can face a severe heart attack or stroke that can cause death too. But if you are taking L-theanine supplements, then you don’t need to worry about this issue.

These supplements minimize the level of stress, which means it will relax and calm you down. This relaxation, in turn, decreases the heart rate. Finally, this reduction will maintain blood pressure (decrease) and cardiovascular health.

5) Helps in Cancer Treatment

A lesser-known fact about the L-theanine component is that it supports treating the patients of a deadly disease called cancer. Some of the latest research shows that doctors tested this element on animals and got to know an interesting fact.

This element increases the efficiency of doxorubicin, which is a chemotherapy drug. However, studies are still going on to know and understand more about this factor.

6) Getting a Slim and Trim Body Figure

If you are planning to eliminate the extra pounds from your body, then L-theanine is an ideal option for you.

You can replace a high-calorie snack with a low-calorie beverage (hot) and green tea during the weight loss journey. This replacement will help you a lot in reducing your weight.

Let us tell you that the L-theanine element in green tea creates a pleasant and savory flavor.

This savory taste is also called the umami flavor. Umami flavor can support you in reducing your appetite and munching habit, which plays a vital role in losing weight.

7) Improving the Sleeping Cycle

One of the basic objectives of L-theanine is to improve the sleeping cycle of the consumer. According to a few studies, L-theanine is one of those elements that help the user to relax and calm down before he goes to sleep. [4]

This relaxation, in turn, supports him to sleep without facing any difficulty. He can sleep peacefully after taking the L-theanine capsule.

These positive points are a result of the special effects of the amino acid. It plays an important role in the chemicals of the brain, which helps the consumer to have a deep sleep.

According to some recent reviews, people who are taking these supplements can get a satisfactory and deep sleep after taking this capsule for 56 days. It works as an antidepressant for people facing issues due to anxiety disorders.

Other Benefits

Some of the other benefits of L-theanine are:

  • It increases the learning capability of the consumer.
  • It enhances memory as well.
  • This can eliminates confusion and anxiety from your life.

Side Effects of L-theanine

L-theanine is one of those natural supplements that have zero harmful side effects. Much of the recent research proves that L-theanine is completely safe if you are taking it according to the doctor’s recommendation.

Since, we know that L-theanine is an extraction from the leaves of green tea. So it is safe to use.

But some people can face a few mild side effects like headaches, nausea, and dizziness. These effects occur only; if you are taking L-theanine with caffeine or you are taking a dosage against the prescription.

You can also face gastrointestinal stress, but again a mild one. Do not take a high dosage. L-theanine has a GRAS status that means Generally Recognized as Safe product by the Food and Drug Administration.

However, if you are a low blood pressure patient or you are taking any sort of other medication, then you need to consult your doctor.

This consultation is important because L-theanine tends to reduce blood pressure. It might be dangerous for you if you are already taking medications to minimize your blood pressure level.


According to the neuroscientists, L-theanine is completely safe to work as a nootropic supplement. However, people should consult their doctors before starting this supplement.

These L-theanine supplements help reduce stress and anxiety disorders. They are widely available in the markets.

Thus, do try them if you want to improve your mental strength.

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