L-Tyrosine(Free Form) 500mg 120 Capsules

  • Sale
  • £10.45
  • Regular price £20.90


Best Result Nutrition Free Form L-Tyrosine 500mg provides a convenient and comfortable to take potent daily supplement to support healthy and normal mental performance. Supplementing with it is thought to increase essential brain chemicals, which affect your mood and stress response.

L-tyrosine or Tyrosine is already produced in the human body from another amino acid called phenylalanine. Tyrosine is vital for protein production within the body, influencing pigment production and the development of dopamine in the brain. Humans often get tyrosine from foods high in protein.

It’s used to make neurotransmitters, which usually decrease under periods of stressful or mentally demanding situations. Moreover, there is excellent evidence that supplementing with tyrosine replenishes these crucial neurotransmitters and improves mental function, compared to a placebo.

L-Tyrosine is a precursor of several vital catecholamine neurotransmitters which we require for mental alertness, blood pressure, activity, anxiety, and the secretion of some hormones. That’s why L-Tyrosine levels are essential in maintaining a healthy mood.

Tyrosine helps to make several essential substances, including dopamine, thyroid hormones, adrenaline, noradrenaline and melanin (1):

  • The vital brain chemical called dopamine regulates your reward and pleasure centres and is crucial for memory and motor skills (2).
  • Hormones adrenaline and noradrenaline are responsible for the fight-or-flight response to stressful situations, preparing the body from a perceived attack or harm (2).
  • The thyroid gland produces thyroid hormones and primarily responsible for regulating metabolism (3).
  • Melanin: This pigment gives your skin, hair and eyes their colour (4).

Facts Based On Science*

It May Improve in Stressful Situations the Mental Performance

    By decreasing neurotransmitters, stress can negatively affect your reasoning, memory, attention and knowledge  (5, 6).

    What's more, two reviews concluded that supplementing with tyrosine can reverse the mental decline and improve cognition (9) in short-term, stressful or mentally demanding situations (7, 8).*

    However, no evidence has suggested that it enhances physical performance in humans (9, 10, 11). Tyrosine can help maintain your mental capacity when taken before a stressful activity, according to studies. Nevertheless, there is no evidence that supplementing with it can improve your memory*.

    In one study in 22 women, tyrosine significantly improved working memory during a mentally demanding task, compared to a placebo. Working memory plays an essential role in concentration and following instructions (12). In a similar study, 22 participants were given either a tyrosine supplement or placebo before completing a test used to measure cognitive flexibility. So compared to the placebo, tyrosine was found to improve cognitive flexibility (13). The quicker a person can change assignments, the higher their cognitive flexibility.*

    More than that, a single dose of L-Tyrosine helped people who lost a night of sleep to stay alert for three hours longer than they otherwise would (14).*

    Supplementing with tyrosine is thought to increase levels of the neurotransmitters dopamine, adrenaline and norepinephrine. By increasing these neurotransmitters, it may help improve memory and performance in stressful situations*(15).

    Even in high doses, supplementing with L-tyrosine has been shown to be safe; however, the potential to interact with certain medications should be observed, warranting caution.

    Ultimately, no research suggests that supplementing with tyrosine will increase your brainpower.

    Best Result Nutrition Free Form L-Tyrosine 500mg Capsules are manufactured in the UK to GMP code of practice and ISO 9001 quality assurance certification.

    These manufacturing procedures ensure that we follow the basic manufacturing practices and prerequisites necessary for product quality and safety. We can guarantee you receive consistently high-quality products because we go above and beyond what is required.

    Suitable for vegetarians.


    Take 1-2 capsules per day between meals or as instructed by your healthcare practitioner.


    L-Tyrosine 500mg, Hydroxypropyl Methylcellulose (HPMC) Capsule Shell.

    Allergy Advice:

    Although rigorous precautions are taken to prevent any cross-contamination, this product is manufactured in a facility that also handles allergy-based materials such as nuts, seeds, milk, egg, cereals, soya, mustard, celery, fish, crustaceans and sulphites.


    Always consult your health practitioner before taking nutritional supplements if you are taking medication or are under medical supervision. You should not take supplements as a substitute for a varied balanced diet. Store in a cool dry place, out of reach of children. Do not exceed the stated dose. Avoid using if you have a hyperactive thyroid or use thyroid hormone pills. Not suitable for vegans.

    *These statements have not been evaluated by the MHRA. These products are not meant to prevent, diagnose, cure or treat any disease.