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L-Tyrosine Benefits, Uses, Side Effects and Functions

Discover the Function, Sources and Benefits of the Health Supplement Ingredient L-Tyrosine, or 2-Amino-3-(4-Hydroxyphenyl)-Propanoic acid

Tyrosine – also known as L-tyrosine and 2-amino-3-(4-hydroxyphenyl)-propanoic acid – is an amino acid that is found in certain foods and produced by the body. It serves as a building block of neurotransmitters and protein, and supports proper organ function. Individuals seeking to boost their levels of L-tyrosine can obtain it through food sources as well as in natural health and bodybuilding supplements such as HGH 30,000 Nanograms, HGF-MAX, A-Max 50 and whey protein mixes.

Functions of L-Tyrosine

As an amino acid, L-tyrosine plays a role in protein synthesis. It is also critical for the production of three key neurotransmitters – epinephrine, norepinephrine and dopamine – that support the nervous system and influence mood, and it is involved in the production of melanin (skin pigments). Finally, L-tyrosine helps to maintain proper function of the thyroid, pituitary and adrenal glands, which are responsible for producing and regulating hormones.

Sources of L-Tyrosine

The body naturally manufactures tyrosine from another amino acid called phenylalanine. Dietary sources of tyrosine include soy, eggs, turkey, chicken, fish, dairy (cheese, milk, cottage cheese, yogurt), pork, beef, beans, peanuts, mustard greens, spinach, pumpkin seeds, and seaweed. L-tyrosine may also be consumed as an ingredient within natural dietary supplements.

L-Tyrosine Benefits and Uses

Since tyrosine is involved in producing epinephrine, norepinephrine and dopamine, it appears to help the body manage the effects of stress. Studies suggest that L-tyrosine may help to enhance memory and mental function under physical and psychological stress, including lack of sleep. It also has been shown to reduce fatigue and increase alertness in individuals who are sleep-deprived.

Numerous sources suggest that L-tyrosine functions as a natural human growth hormone (HGH) releaser, also known as an HGH secretagogue. For this reason, L-tyrosine is believed to have a beneficial effect on athletic performance, helping to build muscle and increase endurance.

Side Effects of L-Tyrosine and Potential Interactions

L-tyrosine supplements are generally considered safe for adults. Some people may experience minor side effects such as nausea, headaches and upset stomach, particularly at high dosages. However, individuals who have been diagnosed with hyperthyroidism (overactive thyroid) or Graves disease should avoid L-tyrosine supplements, as they can exacerbate these conditions due to increased production of thyroxine.

Interactions are possible with some medications. L-tyrosine has the potential to elevate thyroxine levels too high when taken in combination with synthetic thyroid hormones, and it may interfere with the absorption of levodopa (L-dopa) in patients with Parkinson’s disease. L-tyrosine supplements may also cause a severe increase in blood pressure when taken with a class of antidepressant medications known as monoamine oxidase inhibitors (MAOIs). More detailed safety information on L-tyrosine side effects and interactions can be found on the University of Maryland Medical Center website. As with any medication or health supplement, it is best to consult your physician before taking dietary supplements containing L-tyrosine.

L-Tyrosine Research and Studies

Numerous research studies have explored the impact of L-tyrosine supplements on mental function, memory and alertness, particularly in relation to physical and psychological stress such as sleep deprivation and cold exposure. One such study published in the Brain Research Bulletin examined the effects of L-tyrosine on cadets during a weeklong military combat training course, and found that supplementation improved cognitive performance while reducing systolic blood pressure. Another group of researchers reported in Aviation Space and Environmental Medicine that L-tyrosine supplements had the ability to counteract cognitive performance decreases in subjects required to perform continuous work after losing a night’s sleep. Similarly, an article in Physiology & Behavior stated that L-tyrosine supplements helped alleviate working memory decrements in subjects exposed to severe cold.

In Amino Acids and Proteins for the Athlete: The Anabolic Edge, author Mauro G. Di Pasquale asserted that amino acids such as tyrosine, arginine, leucine and gamma-aminobutyric acid (GABA) all may potentiate HGH secretion. Research into L-tyrosine’s effects on athletic performance, muscle growth and endurance remains ongoing; however, clinical evidence in support of these benefits has not yet been published.

For additional L-tyrosine research, refer to the PubMed site sponsored by the National Institutes of Health (NIH).

HGH.com Supplements With L-Tyrosine

Athletes, bodybuilders and fitness enthusiasts can harness the benefits of L-tyrosine with natural HGH releasers and bodybuilding supplements from HGH.com:

HGH 30,000 Pills and HGH 30,000 Spray – Available in both capsule and spray forms, HGH 30,000 Nanograms promotes HGH production with a powerful combination of L-group amino acids, including L-tyrosine. These oral supplements support muscle growth, fat-burning, increased energy and other benefits.

HGF MAX – These bodybuilding supplements are formulated to naturally boost HGH production with ingredients such as L-tyrosine and other amino acids, which help to build muscle, enhance muscle tone, increase metabolism and improve stamina.

Anapolan Max 50 (A-Max 50) – Designed to help bodybuilders achieve rapid muscle mass increases, A-Max 50 features L-tyrosine and other active ingredients to promote lean muscle gain, stimulate HGH production and elevate testosterone levels.

Multi-Pro Chocolate Whey Protein – With nearly 500 milligrams of L-tyrosine and 24 grams of protein per serving, Multi-Pro is a complete protein supplement that is intended to help users build muscle, reduce body fat and improve the immune system.

CytoSport Vanilla Whey Protein – One serving of low-fat, low-lactose, CytoSport whey protein contains 3 grams of L-tyrosine and a full 18 grams of protein. It is formulated to aid in developing lean muscle mass and recovering more quickly after intense training.

TakeOFF Maximum Catalyst – Tyrosine is intended to fulfill several functions in the TakeOFF fat-burner formula: raising norepinephrine levels to promote thermogenesis, restoring neurotransmitters to support mental focus and improving thyroid function to boost metabolism.

NxLabs Plasmavol and NxLabs Pump System – These NxLabs supplements contain amino acids such as L-tyrosine to help boost nitric oxide production, improve muscle pumps and vascularity, and increase strength.

References (Function, Sources, Benefits/Uses and Side Effects/Interactions):

NYU Langone Medical Center. “Tyrosine”; published under “Herbs & Supplements”; last reviewed September 2014. <http://www.med.nyu.edu/content?ChunkIID=21794>

University of Maryland Medical Center. “Tyrosine”; published under the “Complementary and Alternative Medicine Guide” on the website; last updated May 7, 2013. <http://umm.edu/health/medical/altmed/supplement/tyrosine>

Presser, Art. “Amino Acids”; Smart Supplementation, published by Huntington College of Health Sciences; 2009. <http://www.hchs.edu/literature/Amino%20Acids.pdf>

WebMD and Natural Medicines Comprehensive Database. “Tyrosine”; published under “Vitamins & Supplements”; accessed September 29, 2014. <http://www.webmd.com/vitamins-supplements/ingredientmono-1037-tyrosine.aspx?activeingredientid=1037&activeingredientname=tyrosine>

Research Sources:

Colzato, Lorenza S.; de Haan, Annelies M.; and Hommel, Bernhard. “Food for Creativity: Tyrosine Promotes Deep Thinking”; Psychological Research; September 2014. <http://www.ncbi.nlm.nih.gov/pubmed/25257259>

Deijen, Jan B.; Wientjes, Cornelis J.; et al. “Tyrosine Improves Cognitive Performance and Reduces Blood Pressure in Cadets After One Week of a Combat Training Course”; Brain Research Bulletin; January 1999. <http://www.ncbi.nlm.nih.gov/pubmed/10230711>

Di Pasquale, Mauro G. “Chapter 6: Physiological and Pharmacological Actions of Amino Acids”; Amino Acids and Proteins for the Athlete: The Anabolic Edge, Second Edition; Boca Raton, FL: 2008; pg. 200. <http://books.google.com/books?isbn=1420043811>

Mahoney, Caroline R.; Castellani, John.; et al. “Tyrosine Supplementation Mitigates Working Memory Decrements During Cold Exposure”; Physiology & Behavior; November 23, 2007. <http://www.ncbi.nlm.nih.gov/pubmed/17585971>

Neri, David F.; Wiegmann, Douglas A.; et al. “The Effects of Tyrosine on Cognitive Performance During Extended Wakefulness”; Aviation Space and Environmental Medicine; April 1995. <http://www.ncbi.nlm.nih.gov/pubmed/7794222>






The Ingredients in the top HGH Supplement "HGF MAX" - Helping you with Muscle Growth

We at HGH.com are excited to introduce another amazing HGH supplement called HGF MAX (HGF:Human Growth Factor).
 
Like ANA-GH, the benefits to this breakthrough HGH Pill are profound. There is truly nothing else like it on the market.
 
Here's a list and explanation of the ingredients and how it's going to help you raise your HGH Levels, build muscles, act as an anti-aging supplement, increase your strength and stamina, and more. HGF MAX is the most potent and best HGH Supplement on the market, period.
  1. L-Arginine: Triple Growth Hormone LevelsStudies show that Arginine can as much as triple your growth hormone levels, even in old age, and mixed with the ingredients within HGF MAX, it can as much as multiply them by TEN! It can also help improve your exercise performance for high-intensity, short duration work outs. It’s also been linked to helping Erectile Dysfunction due to its ability to increase blood flow. Further - It increases fat burning, builds muscle tissue, boosts immunity, promotes healing, enhances male fertility, and more!
  2. L-Glutamine
    L-Glutamine is essential to your body and is used by your body during times of stress. It's important to your body's muscle maintenance. It increases energy levels and is known to add mental focus and alertness. It's also helpful with cell growth. Other studies have shown it to boost your immunity, lower cholesterol levels and lower blood pressure.

  3. L-Lysine
    Lysine is an essential amino acid that the human body cannot produce naturally. Lysine works with the other essential amino acids in HGF MAX to maintain growth, lean body mass, and the body's store of nitrogen. Lysine with the other ingredients in HGF MAX can multiply your growth hormone levels by as much as 10 times! It can also help with your sexual stamina.
  4. L-Tyrosine
    Tyrosine is used by the thyroid gland for the production of Thyroxine, another vital hormone shown in clinical studies to help reduce fatigue and depression, as well as regulate growth and metabolism.
  5. Glycine
    Glycine is one of the key stimulatory agents that encourages your pituitary gland to secrete HGH! It also has a calming effect on the brain and may play a role in the health of the prostate. Studies show that a clear and significant increase of serum HGH was observed after people were given Glycine.
  6. Astragalus extract
    Astragalus is used to boost the body's immune system as well as treating health conditions such as heart disease. Its antioxidant effects inhibit free radical production, thus helping to repair damaged cells and help stave off some of the signs and symptoms associated with aging.
  7. Deer Antler Velvet 
    Deer Antler Velvet is a powerful and natural source of natural source of glucosamine, chondroitin and collagen that can help you boost your strength and performance. In the 1980s, scientists tested the effects of deer antler velvet on the performance of top athletes, and the results were astonishing. Deer antler velvet helped increase the strength and muscle mass of athletes, and speed their recovery time from exercise, enabling them to shatter records. Deer Antler Velvet is a must in Performance Enhancers.
  8. GABA (Gamma-Aminobutyric acid) 
    GABA (Gamma-aminobutyric acid) is essential for brain metabolism, and is made in the body from another amino acid, glutamic acid. As human growth hormone is produced in the brain by the pituitary, GABA HgH releaser influences the brain environment in a positive way to facilitate the production and release of growth hormone.
  9. Phosphatidyl Choline
    This acts as an excellent emulsifier, facilitating the absorption of the other nutrients included in our HGF MAX. Phosphatidyl Choline also breaks down fat deposits in the body, making it helpful in the prevention of gallstones, atherosclerosis, heart disease, and liver problems, depression, memory loss, and neurological disorders.
  10. L-Ornithine (L-Ornithine HCl)
    L-Ornithine is the most potent amino acid ever studied for stimulating the production and release ofHuman Growth Hormone from the pituitary gland. Studies of L-Ornithine have shown the ability to regenerate the thymus gland, liver, and heart tissue, enhance muscle growth, and increase immune system function.
In closing, you cannot miss out on HGF MAX. This is going to be another game changer by HGH.com and Purity Select!






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