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N-Acetyl L-Tyrosine is a dietary supplement containing tyrosine, a proteinogenic amino acid produced by the body from phenylalanine.
It plays a role in the production of melanin, a pigment responsible for skin colour, and in regulating mood.
Tyrosine dose: how much should you take a day?
Tyrosine is produced by the body from phenylalanine, the dietary requirements of which have been assessed by the WHO as being 1.5g-2g (1-2). However, when metabolic demand exceeds what can be produced endogenously, tyrosine needs to be obtained at sufficient levels from the diet, as is the case with other amino acids such as taurine, glycine, arginine and proline.
In such – relatively frequent – cases (fatigue, over-training, depression), tyrosine supplements can be helpful. Tyrosine actually helps to synthesise catecholamines – adrenalin, noradrenalin and DOPA, as well as melanin and thyroid hormones.
What happens to tyrosine in the body once it’s ingested?
Tyrosine is able to cross the blood-brain barrier and reach the brain, where a fraction of it is converted under the action of an enzyme called tyrosine-hydroxylase (4), which is in turn converted into the so-called ‘pleasure’ hormone. Studies show these conversions increase in situations of stress or intense cognitive exercises (5-7). In the medium term, however, stress is known to reduce the level and performance of catecholamines, probably due to the fact that the amino acids that help to produce them become depleted.
A number of pathological conditions are associated with decreased synthesis of catecholamines and the ‘pleasure hormone’ (8-9).
What is in N-Acetyl L-Tyrosine
Any questions?
N-acetyl L-tyrosine supplements are usually taken by sportspeople to combat fatigue (physical and mental) and to increase resistance to stress. The scientific literature reports no risks associated with such use but does not recommend it for those with Parkinson’s type disorders or thyroid problems.
The recommended dose is around 600mg of tyrosine a day (2 capsules), to be taken at the beginning of the day when the rate of catecholamine synthesis in the brain is at its highest.
Tryptophan is an essential amino acid, and in particular, a serotonin precursor. Unlike tyrosine, tryptophan is found in plant-source foods because animals are not able to synthesise it. However, both these amino acids are involved in producing neurotransmitters, so it is worth considering combining tyrosine supplementation with that of tryptophan.
This product’s capsules are made of pullulan, a natural polysaccharide obtained by fermenting tapioca or corn. Pullulan contains no animal ingredients and provides an excellent barrier to oxygen, helping to preserve the integrity of the capsule’s ingredients. It is also an eco-friendly alternative to synthetic materials.
may 7 2021
good good good
september 17 2024
Je n'arrive pas à voir ce que ça fait.
I can't see what it does.
Bonjour Daniel,
Merci pour votre retour concernant le produit N-Acetyl L-Tyrosine. La tyrosine est un acide aminé qui joue un rôle clé dans la production de neurotransmetteurs, comme la dopamine et la noradrénaline. Elle peut être bénéfique dans des situations de stress, de fatigue ou de concentration, car elle aide à soutenir la fonction cognitive et l'humeur.
Il est important de noter que les effets d'une supplémentation peuvent varier d'une personne à l'autre et peuvent prendre un certain temps à se manifester. Si vous ne ressentez pas d'effets immédiats, cela ne signifie pas nécessairement que le produit n'est pas efficace. Je vous encourage à poursuivre la prise et à observer vos sensations sur une période plus longue.
Si vous avez d'autres questions ou si vous souhaitez discuter de votre expérience, n'hésitez pas à nous contacter. Nous sommes là pour vous aider !
Cordialement,
Gaëlle
Service Client Supersmart
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july 25 2024
J’aime bien, ça me booste
I like it, it boosts me.
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july 20 2024
Un peu tôt pour donner un avis éclairé
A bit early to give an informed opinion
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july 19 2024
Bon produit quand on pratique du sport.
Good product for when you practice sports.
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Merci . C'est vrai que je suis moins stressé et moins fatigué depuis que j'ai commencé la prise de N-Acetyl L-Tyrosine .