Tyrosine - role in the body and beneficial properties of the amino acid. Tyrosine - role in the body and beneficial properties of the amino acid Tyrosine: beneficial properties

Tyrosine: what is it?

Tyrosine is an essential amino acid that the body cannot produce on its own. Even knowing which foods contain tyrosine and consuming them, the body cannot accumulate enough of it. Therefore, tyrosine reserves in foods or medications must be replenished regularly.

In the literature, this amino acid can be found under the following names: α-amino-β-(p-hydroxyphenyl) propionic acid, aromatic alpha amino acid, l tyrosine, l tyrosine (the incorrect name is tyrosine n). The last two names represent the optically isomeric form. In addition to it, D tyrosine and the combination in the form of a racemate (DL) are isolated.

Tyrosine differs in structure from phenylalanine in the presence of a phenolic hydroxyl group in the para position of the benzene ring. This substance is part of almost all protein compounds present in the human body. It is used to detect proteins in substances (Milon reaction).

The structural formula of tyrosine looks like this: HO-BK-CH2-CH(NH2)-COOH.

Rational formula: C9H11NO3.

The process of amino acid formation in the human body consists of many stages. Phenylalanine is used to form tyrosine (the reaction occurs in the liver with the participation of the enzyme phenylalanine-4-hydroxylase). The transformation of phenylalanine to tyrosine in the body is necessary to remove excess phenylalanine, not to restore tyrosine reserves. Its excess is utilized. In the process of further reactions, tyrosine is converted into 4-hydroxyphenylpyruvate by transamination with α-ketoglutaric acid. To form tyrosine in proteins, a number of enzymes are used, for example, tyrosine kinase, tyrosinase, and phosphatases.

Despite the fact that it is produced from another amino acid - phenylalanine, the human body absorbs it in the form of catecholamines, such as dopamine, norepinephrine, and adrenaline. The latter are hormones that provide a response under stress or when the stress factor ends.

Beneficial properties of tyrosine and its effect on the body

l tyrosine, why is it needed in the body? The biochemistry of amino acid action is very complex. Since the substance provides a chemical reaction in which hormones are synthesized, the main function is to normalize hormonal levels. Dopamine is responsible for pleasure, normal mood and the formation of a reaction of curiosity. In parallel, such important neurophysiological processes as attention, energy, mood, memory, and vigilance are involved. Adrenaline and norepinephrine have opposite effects. The first is released under stress, the second eliminates its consequences. Another hormone, the synthesis of which is determined by a sufficient content of tyrosine, is melanin. It is responsible for skin color and protection from ultraviolet radiation.

The use of tyrosine in the form of medicine or food has the following effects on the body:

improves mood and creates a feeling of subjective well-being (due to the action of dopamine);
increases cognitive function during stress (action of dopamine, norepinephrine and adrenaline);
protects the body from the effects of nervous shock and anxiety (the effect of norepinephrine);
improves attention and gives vigor;
protein synthesis in combination with other amino acids such as alanine, tryptophan.

The properties of proteins synthesized thanks to tyrosine are different. Some are involved in the transmission of hereditary information, others ensure the formation of specialized immune cells (antibodies), and others are important in sports, as they are part of muscle fibers.

One of the effects of using the substance is normalization of body weight. Thanks to the thyroid gland, all metabolic processes are controlled: fat breakdown, glucose conversion, protein synthesis. As soon as one of the processes is disrupted, a person begins to uncontrollably gain extra pounds. Neither sports nor proper nutrition help solve the problem. To do this, you just need to normalize your hormone levels. Therefore, drugs such as Tyrosine from iHerb are prescribed.

The body's daily requirement for tyrosine

For an adult, the need ranges from 1 to 5 g. It all depends on gender, age, nutritional characteristics (amount of vitamins, minerals, for example, selenium). Doctors say that in the form of a dietary supplement you can take up to 12 g of the substance per day.

Another option for calculating the dosage is the proportion of 16 mg per kg of body weight.

Important! Increasing the dosage of tyrosine is intended for individuals with excess weight, poor memory, abnormalities in the thyroid gland, a tendency to depression or hyperactivity. But only a doctor can determine the exact amount of the substance

Consequences of tyrosine deficiency

A lack of tyrosine is fraught with various pathological conditions. Among them:

hypothyroidism is a condition caused by a long-term, persistent lack of thyroid hormones, the opposite of thyrotoxicosis. The extreme degree of manifestation of clinical symptoms of the disease in adults occurs as myxedema, in children - cretinism;
tyrosinemia is a disease associated with a lack of fumarylacetoacetate hydrolase activity. Mutations lead to disruption of tyrosine metabolism with damage to the liver, kidneys, and peripheral nerves. The first symptom of the disease is liver dysfunction.

Consequences of excess tyrosine

With excessive intake of the substance, tachycardia, increased excitability, anxiety, loss of appetite, increased or decreased blood pressure, chest pain, diarrhea, shortness of breath, dizziness, and drowsiness may develop.

Side effects from an excess of amino acids can be constant progressive fatigue, headaches, heartburn, insomnia, nausea, joint pain, allergic rash, stomach pain, hyperthyroidism, weight loss.

Food sources

The following foods will help replenish tyrosine reserves: cheese, chicken, turkey, fish, peanuts, almonds, avocados, milk, yogurt, bananas, soy products, etc. Sunflower seeds, seafood and beans are rich in the amino acid.

Lamb and turkey are useful meat products.

Fish dishes made from tuna, mackerel, cod, halibut, shrimp and crab are indicated for tyrosine deficiency.

When preparing for pregnancy, women should include sesame seeds, sunflower seeds, pistachios, almonds, and pine nuts in their diet.

Medicines containing tyrosine

“L-Tyrosine” (manufacturer NOW Foods/Paradigma), pack of 120 capsules, 500 mg of tyrosine per capsule. Indicated to increase brain activity and improve memory. Price in St. Petersburg and Moscow 1800 rubles;
"Vita-Tyrosine". The capsule contains: L-Tyrosine - 400 mg, iodine 100 mcg. There are 100 capsules in a package. Effect of the drug: increased synthesis of norepinephrine, dopamine, adrenaline, thyroid hormones and melanin. Indicated for the prevention of vegetative-vascular dystonia and hypotension. Price – 1600 rubles;
“L-Tyrosine” (BLACK PIENI group CO, LT, China). In the form of crystalline powder or crystals in plastic bags for the production of non-sterile dosage forms. Indicated for decreased concentration and memory, hypotension, chronic fatigue syndrome, vegetative-vascular dystonia, in the complex treatment of Parkinson's disease, hyperactivity in childhood;
"N-acetyl-tyrosine." The drug contains a modified form of the amino acid – H-acetyl-tyrosine. The drug is presented in N-Acetyl Tyrosine capsules (350 mg, 120 pcs.) from the manufacturer Jarrow Formulas. The capsule contains 350 mg of N-acetyl-tyrosine.

Indications for taking L-Tyrosine

Tyrosine preparations are indicated:

with decreased concentration, memory impairment;
chronic fatigue syndrome;
decreased performance;
constant depression, mood swings;
neurosis, melancholy, apathy, melancholy, anxiety, fear.

They are also prescribed for the complex treatment of alcoholism and drug addiction.

For children, medications are prescribed for hyperactivity, restlessness, and lack of concentration.

In old age, the drug is used in complex therapy for Parkinson's disease.

To treat vitiligo, tyrosine is combined with phenylalanine.

But don’t expect miracles and getting rid of extra pounds. The task of tyrosine is to normalize metabolism.

In sports, the substance helps to more quickly break down glucose and fats, which are used during intense or prolonged exercise. Thanks to tyrosine, recovery occurs faster and concentration improves. Therefore, it is necessary to take the substance during periods of increased physical activity, in preparation for competitions and during participation in them.

In bodybuilding, tyrosine is effective in combination with other amino acids. Together they create the preconditions for increased loads, so athletes can work with heavier weights and recover faster. But tyrosine alone will not help build muscle.

Contraindications to the use of L-Tyrosine

Cannot be combined with taking antidepressants from the group of MAO inhibitors.

In schizophrenia, the amino acid is contraindicated.

During pregnancy and lactation, be sure to consult a doctor.

Individual intolerance to the components of the drugs is also considered a contraindication.

With high blood pressure, people taking iodine preparations and with increased thyroid function are not prescribed tyrosine.

How to use L-Tyrosine

Most drugs are designed to take from one to 3 capsules daily. It is best to take them on an empty stomach an hour before breakfast.

The instructions say that for better absorption, the drug can be mixed with citrus juice or washed down with water.

The course of treatment lasts 1-1.5 months, then you need to take the same break.

Side effects

No side effects were identified when using the drug. They are possible with long-term use of the amino acid without breaks and an unreasonable increase in dosage.

Interaction with other substances

The use of any medications and dietary supplements must be agreed with a doctor, since the interaction of tyrosine with other substances is controversial. For example, when combined with monoamine oxidase inhibitors, the amino acid can increase blood pressure and, in some cases, even cause a heart attack or stroke.

Taking thyroid hormones against the background of tyrosine and medications that contain it can provoke hyperthyroidism.

special instructions

on an empty stomach in combination with (you can dilute tyrosine with orange juice) and in combination with the enzyme tyrosine hydroxylase;
in combination with St. John's wort, valerian, lemon balm, chamomile, mint (the effect on the nervous system increases).

The amino acid tyrosine is present in every cell of our body and is also found in many protein foods. It is one of the non-essential amino acids. This means that the body of healthy people produces the necessary amount of tyrosine to meet its needs.

general characteristics

Tyrosine, also known by the chemical name 4-hydroxyphenylalanine, is one of the 20 amino acids necessary for protein synthesis.

And since the human body is able to independently produce this substance, it is considered a non-essential amino acid. This means that a healthy person does not need additional supplements to provide themselves with the required amount of tyrosine. This amino acid affects many processes in the body, including the production of neurotransmitters.

The word "tyrosine" comes from Greek and is translated as "cheese". The amino acid received its name in 1846, when it was first discovered by the German chemist Liebig in casein, a protein found in cheese. And its chemical name indicates that tyrosine can also be synthesized from another amino acid - phenylalanine.

There are 3 forms of tyrosine: L-tyrosine is an amino acid, found in the proteins of all living organisms, D-tyrosine is a neurotransmitter, found in enzymes, DL-tyrosine has no optical energy.

How it works in the body

In the human body, tyrosine is produced from another amino acid - phenylalanine, but the body absorbs it in the form of catecholamines, in particular dopamine, norepinephrine, and adrenaline. These substances are able to correct neurophysiological processes such as attention, energy, mood, memory, and vigilance. Individuals with insufficient amounts of catecholamines experience various types of cognitive dysfunction. And the only way to increase the synthesis of catecholamines is to eat foods high in tyrosine and phenylalanine (chicken, fish, turkey). To meet these needs, you can resort to dietary supplements and medications containing tyrosine. True, in addition to a number of advantages, they also have a large number of side effects.

In the body, tyrosine is able to cross the blood-brain barrier and enter the central nervous system quite quickly. By increasing the level of adrenaline, norepinephrine and dopamine, tyrosine is able to influence a wide range of processes and functions in the body.

Another meaning of tyrosine is the production and synthesis of additional chemicals and hormones, for example, melanin (the pigment that determines the color of skin and hair). Tyrosine also promotes the functioning of organs responsible for producing and regulating hormone levels in the body. And these are the adrenal glands, pituitary gland, thyroid gland. It is also directly involved in the creation of almost all proteins in the body.

Positive properties of tyrosine:

improves mood and creates a feeling of subjective well-being;
increases cognitive function during stress;
protects the body from the effects of nervous shock and anxiety;
improves attention and gives vigor;
promotes the production of dopamine (the hormone of pleasure and happiness).

Functions in the body:

Protein synthesis.

One of the main roles of tyrosine is participation in protein synthesis. The human body uses combinations of 20 amino acids to build protein molecules, and tyrosine is one of them. Proteins perform a number of functions in the body. Some control gene activity, others promote chemical reactions or provide structural support for cells. The body's ability to synthesize proteins allows for the growth of new cells, which is especially important for newborns. And this is a considerable merit of tyrosine.

Brain work.

By consuming tyrosine, you don’t have to worry about problems with brain functioning. Tyrosine is necessary for the creation of the neurotransmitters dopamine and norepinephrine - compounds that transmit impulses between neurons. Does a cup of invigorating coffee in the morning bring you pleasure? Now, without dopamine you wouldn’t feel this. Maybe some other sensations would visit you, but without the presence of dopamine in the body, created from tyrosine, you would have to forget about the sensations of pleasure. As for norepinephrine, it is, so to speak, a close chemical relative of adrenaline and is responsible for the development of memory. So, sitting in the morning with the same cup of coffee, perhaps you remember something pleasant. And again, all this is due to the neurotransmitter, but this time norepinephrine. So it turns out that without tyrosine, morning coffee drinking (and not only that) would be much sadder.

Stress and the nervous system.

One of the most interesting potential benefits of tyrosine is its ability to alleviate stress. This function is also associated with the production of adrenaline and norepinephrine. A number of studies have confirmed that tyrosine mitigates the negative effects of not only stress, but also cold, relieves fatigue, especially after hard work, and even affects the quality of sleep. In addition, there is evidence that this amino acid increases mental performance and intellectual potential. May be effective against depression as dopamine helps improve mood. It is also believed that tyrosine improves the quality of impulse transmission throughout the body. And scientists from New York University believe that tyrosine increases alertness, especially in sleep-deprived people. But this assumption still requires additional study.

Melanin.

Tyrosine also performs a number of physiological functions in the body. For example, this substance is involved in the production of melanin, a protein pigment that gives the skin its natural color and protects it from the sun.

Hormones.

The thyroid gland (regulates metabolism and cell growth) and the pituitary gland (controls reproductive health) constantly feel the effects of tyrosine. By increasing levels of the hormones norepinephrine and epinephrine, the amino acid can reduce fat storage and suppress excessive appetite.

Dependencies.

There is an opinion that tyrosine helps to cope more easily with addictions: caffeine, drugs, and medications.

Side effects

Taking tyrosine as a supplement can cause a number of unpleasant side effects. People with an overactive thyroid gland should take this substance with particular caution.

Anxiety.

Unexplained anxiety may be a side effect of taking tyrosine. This amino acid affects cognitive abilities and also acts as a stimulant of the central nervous system. And taking a pharmaceutical analogue of tyrosine can increase the frequency of impulses in the brain several times. An increased sense of fear and panic is a possible result of regular use of the substance.

Digestive disorder.

Tyrosine in dietary supplement form has been shown to benefit the health of the digestive system. First of all, its not the best effect is felt by the mucous membrane of the digestive tract. Irritation from the amino acid causes stomach discomfort. If there is blood in your stool, you should immediately stop taking tyrosine and consult a doctor.

After the “chemical” tyrosine enters the digestive system, reflux can develop. Due to the effects of the amino acid, the sphincter in the digestive canal relaxes and allows stomach contents back into the esophagus, causing heartburn and other discomfort.

Migraine.

Migraine in severe and prolonged form is one of the side effects of long-term use of the amino acid. In this case, you should stop taking the drug containing tyrosine and replenish its reserves exclusively from natural foods.

Tachycardia.

Chest fluttering can be caused by tyrosine, which, by stimulating the central nervous system, speeds up and intensifies the heartbeat.

Nervousness.

Influencing the nervous system, it can cause the development of nervousness, which arises seemingly for no reason. In fact, there is a reason - the body does not accept a drug containing an amino acid.

Daily norm

Clinical studies show that tyrosine in the form of a dietary supplement can be consumed up to 12 g per day.

Meanwhile, doctors do not advise resorting to such high doses unless absolutely necessary. Moreover, the adequate generally accepted daily intake for healthy people ranges between 1 and 5 grams of the substance (approximately 16 mg per 1 kg of human weight). This is quite enough for tyrosine to efficiently perform its functions in the body.

But people with excess weight, poor memory, abnormalities in the thyroid gland, a tendency to depression or hyperactivity need tyrosine more than healthy people. You can also increase your daily amino acid intake to relieve unpleasant symptoms of PMS, slow down the development of Parkinson's disease and improve brain function. Individuals who work physically or actively participate in sports should also take care to get a slightly higher dose of tyrosine.

Elderly people, hypertensive patients, people with low body temperature and digestive disorders, as well as with Felling's disease or using antidepressants, on the contrary, are not advised to abuse supplements containing the amino acid.

Overdose symptoms

Abnormal heart rate, irritability, anxiety, loss of appetite, changes in blood pressure (both up and down), chest pain, diarrhea, difficulty breathing, dizziness, drowsiness, fatigue, headaches, heartburn, insomnia, nausea, joint pain, allergic rash, stomach pain, thyroid dysfunction, weight loss. These are all possible signs that the body needs less amino acid consumption.

Food sources

Tyrosine is found in many high content foods, and there are over 100 items. Among the most popular: chicken, turkey, fish, peanuts, almonds, avocado, milk, yogurt, bananas, soy products and more. The amino acid is found in large quantities in seeds, seafood and beans. But, given that the name of the substance comes from the word “cheese”, it is logical that it is in it that you should look for tyrosine in the first place. In addition, it is found in many products that promote weight loss.

In addition to the above-mentioned products, the daily requirement of tyrosine and other useful ones can be obtained from different types of cheeses, such as Gruyère, edam, mozzarella, hard goat cheese, and cottage cheese. Among meat products, lamb and turkey dishes are also healthy. The fish list for good health includes tuna, mackerel, cod, halibut, as well as shrimp and crab. As a snack, you should choose healthy sesame seeds, sunflower seeds, pistachios, almonds, and pine nuts. In the dairy department, give preference to natural yoghurts and milk. Lentils, different varieties of beans, chickpeas and whole grain products, which also have a high concentration of tyrosine, will help improve memory and mood.

One of the nonessential amino acids that the body produces in small quantities on its own. This amino acid is one of the 20 most important for the human body. She is responsible for a number of functions:

The production of the hormone melatonin, which controls the regulation of circadian rhythms.
Mood. With a normal level of l-tyrosine in the blood, a person is less susceptible to stress and depression.
Relieving fatigue, including from physical activity.
The work of vital organs - the thyroid gland, adrenal glands and pituitary gland. With a lack of l-tyrosine in the blood, a thyroid disease such as hypothyroidism is often observed.

L-Tyrosine is one of the non-essential amino acids that the body produces in small quantities on its own.

Suppresses the feeling of hunger, which is why supplements containing l-tyrosine are actively used for weight loss.
Helps burn excess fat.
Minimizes the manifestation of allergic reactions.
Preventing headaches.
Stabilization of metabolism.
Increases attention and cognitive function.

Country Life, L-Tyrosine, 500 mg, 100 Veggie Caps

It ranges from 500 to 1500 mg. Due to the fact that l-tyrosine is formed in the human body from the essential amino acid phenylalanine, it can be considered conditionally replaceable.

And with an unhealthy diet, a deficiency of l-tyrosine in the body can occur, so it is important to know which foods contain this amino acid. As a result of deficiency, the following symptoms appear:

Blood pressure is reduced.
The temperature is below normal.
Lethargy, drowsiness.
Restless legs syndrome. With this syndrome, in the evening or at night, at rest, unpleasant sensations occur in the lower extremities.
Unreasonable weight gain.

If you eat improperly, you may experience a deficiency of l-tyrosine in the body.

If one of the symptoms occurs, you should reconsider your diet. From the table below, you can find out which food shortages can cause amino acid deficiency in the body. In case of mild symptoms, tyrosine deficiency can be replenished with the help of certain foods. People who are overweight can also adjust their daily diet. After all, it has been scientifically proven that l-tyrosine is necessary for weight loss. Although l-tyrosine is produced by the body, a significant portion of it comes from food. Of course, you can make up for the deficiency with the help of dietary supplements, however, natural products are better absorbed.

You can buy L-tyrosine on the American website, where there are always promotions, and using our link you are guaranteed to receive an additional 5% discount. It also works. Therefore, if you have already decided which L-tyrosine is best for you, then it can be found at.

Foods containing amino acid

When answering the question of which food products contain l-tyrosine, it is worth mentioning dairy products. They contain the protein casein, which contains l-tyrosine. It is worth noting legumes, for example, beans contain 664 mg of amino acids, lentils - 689 mg. Among fruits, the highest content of l-tyrosine is observed in bananas (9 mg), avocado (48 mg), pears (2 mg), plums (8 mg), persimmon (16 mg), orange (16 mg), cherries (14 mg ). L-tyrosine is also found in mushrooms and greens, which is certainly worth paying attention to for vegetarians. Champignon mushrooms contain 14 mg, and shiitake mushrooms contain 78 mg of tyrosine. Among the greens, it is worth noting dill, parsley, basil, which contain 96.82 and 77 mg of amino acids, respectively.

Among fruits, the highest content of l-tyrosine is observed in avocados (48 mg)

People who adhere to a raw food diet and others should include berries and vegetables, which contain l-tyrosine, in their diet. For example, berries such as tomato (14 mg), watermelon (12 mg), and sultana grapes (10 mg) are very rich in tyrosine. Vegetables rich in the substance: white cabbage (19 mg), potatoes (50 mg), zucchini (32 mg), carrots (43 mg), broccoli (50 mg). Among nuts, the place of honor in terms of l-tyrosine content belongs to peanuts (1049 mg), but there is also a lot of it in other nuts. For example, almonds contain 452 mg, walnuts - 406 mg, pistachios - 412 mg, cashews - 508 mg.
In addition to the listed products, pumpkin seeds (1093 mg), sesame (743 mg), meat, fish and seafood are also rich in amino acids. Below is a table of the most commonly consumed foods.

Table of additive content in food products.

No. P/P	The product's name	Tyrosine content per 100 g of product
1	Cow's milk	0.119
2	Kefir	0.112
3	cottage cheese	0.456
4	Chicken egg	0.515
5	Beef	0.596
6	Chicken	0.66
7	Beef liver	0.47
8	Cod	0.439
9	Rice	0.176
10	Semolina	0.158
11	Buckwheat	0.16
12	Oatmeal	0.234
13	Peas	0.227
14	Wheat flour	0.149
15	Pasta	0.253
16	Wheat bread	0.293
17	Rye bread	0.162

If the symptoms of amino acid deficiency are pronounced, it is better to seek help from a doctor who will prescribe medications containing l-tyrosine for treatment.

Most often, dietary supplements based on this amino acid are used for weight loss and muscle building. With the use of dietary supplements based on tyrosine, the effectiveness of the diet increases by more than 20%.

However, you should not abuse their use, since uncontrolled use of such drugs leads to stomach problems, irritability and aggressiveness.

Please note that if you have certain diseases, using the supplement is prohibited. These include any tumor. Also, during a migraine, it is advisable to minimize the consumption of foods rich in acid. A contraindication to the use of dietary supplements is pregnancy. The use of these drugs is also contraindicated for people with diseases such as schizophrenia and hypertension.

L-tyrosine is an amino acid , which is present in every cell of the human body. It plays an important role in the synthesis of protein and hormones, and is involved in the production of neurotransmitters.

Biological supplements with tyrosine help improve mood, improve memory, reduce anxiety and absent-mindedness, and stabilize the overall emotional background.

The human body independently produces L-tyrosine in the required quantity, so it is one of the nonessential amino acids. In addition, this substance is found in many protein foods.

Product description. Recommendations for use. Reviews. Read more >>

Thanks to dietary supplements with L-tyrosine, it is possible to treat depression and psychosis. Regular use of such drugs relieves inhibition and restores processes disturbed by mental disorder.

Let's look at the beneficial properties of tyrosine, in what cases this drug is prescribed, how to take it, and whether there are any contraindications. Also in this article you will find reviews on the use of tyrosine supplements and where you can purchase it.

Beneficial features

The word "tyrosine" comes from the Greek "thyri" and means "cheese". It was discovered by the German scientist Liebig in the protein casein, which is found in cheese - hence the name.

There are three forms of tyrosine: L-tyrosine is an amino acid found in proteins in organisms; D-tyrosine neurotransmitter found in enzymes; DL tyrosine, which has no optical energy.

The chemical name is 4-hydroxyphenylalanine. Thanks to tyrosine, various biological processes in the body occur and the breakdown of protein components included in various cellular structures and enzymes is activated. In addition, it plays an important role in the synthesis of hormones such as dopamine, adrenaline, norepinephrine, and thyroxine.

Effect on individual body systems:

Neurology. Prevention of the development of post-stress amnesia. Drowsiness decreases and concentration improves. Catecholamine hormones are produced in the blood as a protective reaction to strong stimulation of the nervous system by stress. Reduces aggression, tension and irritation during stress.
The cardiovascular system. Systolic and diastolic blood pressure is normalized against the background of hypertension. Treatment of vegetative-vascular dystonia.
Weight loss. It helps in weight loss by increasing metabolism, and it also has a fat-burning effect.
Diseases. Treatment of Parkinson's disease in combination with other medications. Increase libido (sexual activity for men and women. Reduce hyperactivity in children. Treatment of vitiligo in combination with phenylalanine. Restoration of thyroid dysfunction. Reduction of allergic reactions.

L-tyrosine also promotes the production of endorphin and adrenaline - hormones that have a calming effect on the nervous system and help reduce cravings for caffeine, alcohol, and neurostimulants. It has protective functions of cells of the nervous system and brain from the effects of alcohol poisoning and tobacco smoking and is used in the treatment of dependence on alcohol and drugs.

Since the hormone decreases with age, L-Tyrosine dietary supplements stimulate its production. This helps strengthen the immune system, normalizes sleep/wake cycles, and removes bad cholesterol in older people.

With a lack of this amino acid, body temperature may even drop. As a result, there is a feeling of coldness in the arms and legs, and cramps in the calf muscles may also appear. L-tyrosine is recommended for people who follow a low protein diet.

L-tyrosine reviews

Before making a decision to take any drug, you should read the recommendations of those who have already taken it. Reviews about tyrosine are mostly positive and this dietary supplement has many fans.

Most often, drugs with this amino acid are taken to improve one’s emotional state. For example, one user notes that taking tyrosine twice a day helped him cope with apathy, fatigue and depression, his mood improved and he gained strength.

To overcome depression, depressed mood and laziness, as well as motivate yourself for some activity or sports training amino acid take courses .

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Reviews from athletes about this amino acid show that its effect is similar to. It is important for the proper distribution of energy during training, helps to preserve the gained muscle mass as much as possible and makes it easier to endure drying periods. Review from one athlete: “With tyrosine you can train every day and feel good. I usually take up to 120 capsules over 40 days.” Sports nutrition should include this drug, especially for men.

You can also read many reviews about this drug from people leading an active lifestyle. A lack of this amino acid leads to deterioration of brain activity, slower metabolism and loss of physical strength. Reviews show that in this case it is enough to take a course of dietary supplements for about two months, 2 tablets per day, and repeat it after three months. There is no point in taking L-tyrosine constantly.

In addition, in some reviews you can read positive feedback about it in comparison with others with a rich composition. Users say that there is a noticeable difference in the effect - it gives much more energy and endurance, and muscles recover faster after exercise. Appetite is normalized, especially after strength training.

According to reviews, the optimal intake is two capsules per day, containing 500 mg of pure tyrosine. One jar is enough for two months, without any additional additives or vitamins.

Reviews for those who want to lose weight. It is impossible not to mention reviews of dietary supplements for those who want to lose weight. For example, according to one user’s review, this drug noticeably reduced appetite after just a week of use, and in addition, there was no desire to eat sweets.

Sleep has normalized, it has become strong and calm, which also has a positive effect on metabolism. Reviews from older people also show the positive effect of the amino acid on the body. A year after taking tyrosine, three capsules a day in between meals, you feel much more cheerful. And judging by one review, the gray hair on the growing hair roots has even decreased.

Where can I buy

You can purchase the natural dietary supplement L-Tyrosine on the Internet on the specialized website IHerb.

One of the most popular drugs (120 capsules with an optimal dosage of 500 mg). The biological supplement from an American manufacturer contains microelements that increase the digestibility of the amino acid and enhance its activity.

L-tyrosine from Thorne Research helps improve well-being, mental activity and memory, increase stress resistance and relieve fatigue after heavy physical and mental stress.

The effect of the substance appears gradually and after two weeks of use, positive signs of improvement will become noticeable. Thanks to this amino acid, it is possible to reduce the use of antidepressants and the need for them.

L tyrosine Now Foods L-Tyrosine price, 500 mg, 120 capsules can be viewed on the IHerb website, where there is a system of discounts and promotions.

Instructions for use

You should be careful when taking the drug and not increase the indicated recommendations and dosages. Due to improper use, there is a risk of side effects.

L-tyrosine is taken no more than one capsule at a time. During the day, the frequency of administration is from 1 to 3, depending on the purpose and severity of clinical manifestations. It is necessary to drink the capsule only with clean non-carbonated water, 100-200 ml is enough.

Instructions for use for weight loss include taking one capsule per day in the morning before meals. This dosage is enough to reduce appetite, reduce fat mass and improve metabolism.

For better absorption of the active substance and bioavailability, you should take the dietary supplement half an hour before meals. The recommended course of use is a month. If necessary, the course can be repeated after three or six months.

In addition, there are foods rich in tyrosine. To replenish its reserves, you can eat foods rich in proteins: turkey; chicken; fish; beans; soy; dairy products; avocado; almonds and peanuts; sesame seed.

Despite all the positive properties, the drug with tyrosine should not be abused.

There are some contraindications to the use of bioadditives:

pregnancy and breastfeeding;
combination of use with other antidepressants;
schizophrenia;
hypertension;
individual intolerance to components;
age up to 18 years.

Benefits for the thyroid gland

This amino acid promotes the production of thyroid hormones thyroxine and triiodothyronine in the body. It is the lack of these hormones that can disrupt the normal functioning of the thyroid gland.

For hypothyroidism it is used for replacement therapy. The daily dosage is selected individually depending on the severity of hypothyroidism and the study of TSH levels. People with thyroid problems should not start using Tyrosine on their own without consulting a doctor.

Since the amino acid tends to be slowly excreted from the body, its required amount to maintain hormone levels is retained for a long time.

So, L-Tyrosine plays an important role in the functioning of the endocrine and cardiovascular systems. It is necessary to increase stress resistance, combat depression, fatigue and absent-mindedness.

Amino acid Tyrosine participates in reactions leading to the formation of adrenaline, norepinephrine, dopamine, thyroxine. In the body, amino acids exist in several forms. Most common form L-tyrosine used as an antidepressant, a means to improve memory and mental activity, and burn fat. With a deficiency of the substance, the synthesis of thyroid hormones is disrupted, blood pressure and body temperature decrease, weight increases, drowsiness and lethargy are felt, and brain activity deteriorates.

Tyrosine is formed in the human body from another amino acid, Phenylalanine, which comes from food. If there is a metabolic disorder, the deficiency is compensated by drugs containing a synthetic amino acid. Its chemical formula and action do not differ from the substance produced in the body, it is quickly introduced into the central nervous system, increases attention in children and adults, improves cognitive functions, and protects against the effects of stress. Reviews from athletes indicate that L-Tyrosine increases physical potential, helps to concentrate on doing exercises, and quickly relieves fatigue after training. Experts recommend buying it to prevent catabolism. The drugs differ in the content of the active substance. On iHerb a large selection of dietary supplements at a relatively low price.

Tyrosine: beneficial properties

In a number of studies conducted at Leiden University, it has been shown to be effective in improving creative thinking. Volunteers who took additional amino acids perceived, analyzed and remembered information faster. Members of the experimental group had higher intelligence test results. They quickly and consistently completed tasks, found non-standard solutions, and thought outside the box.

Studies conducted among children with ADHD have shown that medications containing . help get rid of absent-mindedness and impulsiveness, and overcome difficulties in remembering and learning.

With increased content, the production of adrenaline and norepinephrine is stimulated, anxiety and symptoms of depression are reduced. The dietary supplement can be used as a prevention and treatment of depressive conditions and psychosis. After regular use, the emotional background stabilizes, lethargy disappears, mood improves, and mechanisms disturbed by mental disorder are restored in the body. The effect of the amino acid appears gradually. The first positive changes are noticeable after a two-week course of treatment. Thanks to the dietary supplement, the use of antidepressants can be reduced.

Used in complex therapy of alcohol and drug addiction. It stimulates the body's production of endorphin and adrenaline, which helps reduce cravings for alcohol, neurostimulants, caffeine and calm the nervous system. The amino acid protects brain cells and the central nervous system from the effects of smoking and alcohol poisoning.

L-Tyrosine stimulates the production of melatonin, which supports sleep-wake cycles, regulates immunity and blood pressure, and removes cholesterol. The amount of the hormone decreases with age. The dietary supplement helps older people restore melatonin levels to normalize sleep and increase the body's protective functions.

The amino acid ensures the production of thyroid hormones thyroxine and triiodothyronine, which accelerate metabolic processes, provide energy to the heart and lungs, promote weight loss and lower cholesterol, and regulate movement coordination. Hormone deficiency causes dysfunction of the thyroid gland.

L-Tyrosine used as replacement therapy in the treatment of hypothyroidism. The substance is slowly eliminated, the required concentration to maintain hormone levels is maintained for a long time. The daily dose is selected individually. Your doctor will tell you how to take it depending on the severity of hypothyroidism after examining your TSH level.

In addition, drugs containing Tyrosine are used for:

relief of premenstrual syndrome;
prevention of Parkinson's disease (increases dopamine levels);
improving the functioning of the adrenal glands;
stimulation of melanin synthesis in case of skin pigmentation disorders.

Slows down oxidative processes in the body, prevents the development of diseases associated with aging and the destruction of collagen and elastin fibers. The amino acid produces melanin, which regulates the entry of UVA rays and protects the skin from photoaging.

Indications for use

Taking it for phenylketonuria helps maintain the amount of phenylalanine, an excess of which disrupts the functioning of the central nervous system, reduces mental activity, causes irritability, developmental delays, sleep disturbances, and behavioral instability. The doctor selects the dose necessary for normal metabolism and restoration of balance. The instructions for use indicate that therapy begins with 50 mcg per day and gradually increases the dosage.

psycho-emotional overload;
depressive states;
hypotension;
skin depigmentation (vitiligo);
hyperactivity in childhood;
deterioration of memory and concentration;
diseases of the endocrine system;
chronic fatigue syndrome.

Effect of application L-Tyrosine in the treatment of Parkinson's disease is to stimulate the production of dopamine, which promotes the conduction of nerve impulses and ensures a person's ability to move smoothly.

Tyrosine: instructions for use

For physiological fatigue and mental stress, take 1000-1200 mg per day 60 minutes before meals. Course duration is 4-12 weeks. For better digestibility, the dietary supplement is washed down with natural citrus juice. With heavy physical exertion and phenylketonuria, the dosage is increased. How to use L-Tyrosine children, the pediatrician will tell you.

In case of overdose, the following are observed: increased heart rate, dizziness, chest pain, diarrhea, drowsiness.

Note! People with gastrointestinal diseases need to take the amino acid 40 minutes after meals.

If you have thyroid disease, it is prohibited to take the drug without a doctor’s permission! reduces the effectiveness of Levodopa.

The drug is not used in the treatment of depression with MAO inhibitors (increase the concentration of dopamine, norepinephrine, serotonin).

Tyrosine: contraindications

pregnancy and breastfeeding;
schizophrenia;
hypertension;
hereditary tyrosinemia.

The effectiveness of L-Tyrosine use by athletes

Thyroxine and triiodothyronine, formed from tyrosine, regulate metabolic rate, heart rate, water-salt balance.

Adding to the diet helps increase stamina and motivation to achieve success, growth and development. The dietary supplement is recommended for preserving muscle mass. The drug can be taken during the drying period to reduce appetite, enhance thermogenesis and the process of fat breakdown.

Release form of L-Tyrosine

Nutritional supplements are available in the form of capsules, tablets, and powder. The amount of amino acid ranges from 350 to 750 mg. The composition of the preparations may include vitamins, extracts of medicinal herbs (St. John's wort, Eleutherococcus, Ginkgo biloba).
The price depends on the manufacturer and additional elements

Now Foods, L-Tyrosine, 500 mg

The dietary supplement stimulates the production of thyroxine, dopamine, and norepinephrine. Hormones will reduce the manifestations of depressive disorders without taking chemical medications. The drug will improve the quality of sports training and reduce fatigue.
L-Tyrosine increases the production of melanin, which promotes a deep, even tan and restoration of pigmentation in areas affected by vitiligo.

decreased memory and concentration;
stressful and difficult life situations (loss of loved ones, work);
hyperactivity in children;
hypertension;
rapid fatigue.

The dietary supplement will help you cope with high stress during a session or an emergency at work.

The drug from an American manufacturer of vitamins, a partner of the US Olympic team, also contains microelements that improve the absorption of the amino acid and enhance its effect. Gelatin capsule is made from plant materials.

The dietary supplement can be used as an antidepressant. In cases of worsening mood, insomnia, anxiety, and apathy, a noticeable improvement occurs after a two-week course of treatment.

L-tyrosine improves memorization and creative thinking, can be used for memory impairment.

The drug enhances the processes of lipolysis and thermogenesis, resulting in an active fat burning process.

Jarrow Formulas, L-Tyrosine, 500 mg

The modified formula is characterized by a high rate of absorption and degree of accumulation in the body. Thanks to the drug, brain function and general physical condition improve. The dietary supplement helps increase the production of norepinephrine and dopamine. After short-term use, the level of depression decreases and interest in life increases. Reviews indicate that after four weeks of use, sleep normalizes, causeless anxiety disappears, and positive emotions appear.

Jarrow Formulas, L-Tyrosine is prescribed to stimulate the synthesis of proteins and hormones, reduce the symptoms of Parkinson's disease, and improve intellectual abilities. The use of the drug for ADHD allows the child to achieve perseverance, improves concentration and speed of information processing. Children's academic performance improves and relationships within the team improve.

The dietary supplement is in demand among athletes to optimize body composition and prevent overtraining.

Source Naturals, L-Tyrosine, Free Form Powder

The food supplement does not contain gluten, soy, sugar or preservatives.
By stimulating the rate of dopamine production, the drug has a positive effect on mental health: it eliminates irritability, apathy, anxiety, and improves mood. L-Tyrosine Helps you lose weight by reducing appetite and improving metabolism. The amino acid increases cognitive abilities in people of all ages. It has been proven that during heavy mental stress, an additional dose helps preserve nerves and improve mental activity.

The drug is recommended to support the functions of the adrenal glands and thyroid gland.
The dietary supplement can be used in many areas of medicine. The recommended dose is 1/4 teaspoon per day, one hour after meals. The instructions for use describe in detail how to take L-tyrosine for treatment and prevention.

Tyrosine: reviews

Lena, 59 years old:
I took it for weight loss. No other methods helped at my age. My appetite has noticeably decreased and I lost 10 extra kilos. Pleasantly surprised by the low price iHerb for all dietary supplements.

Svetlana, 40 years old:
I bought it for my mother. With age, she developed forgetfulness, her character became unbearable: tears, irritability, apathy, causeless anxiety. There was no immediate effect, but after 6 weeks of taking it, she became calmer and the insomnia went away. Now mom smiles, goes to visit, is interested in her children and grandchildren.

Veronica, 25 years old:
– the best antidepressant. It was only thanks to him that I made it through the probationary period at my new job. It was difficult to withstand heavy loads, and the team was unfriendly. After 3 weeks of use, stress resistance significantly increased. I quickly cope with assigned tasks.