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L-Tryptophan Supplement
L-Tryptophan Supplement
0441L-Tryptophan SupplementSize
L-Tryptophan 500 mg
Stress and mood
4.4 out of 5
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16 reviews
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34.00 €(41.38 US$) is available
L-Tryptophan is an essential amino acid and precursor of serotonin, melatonin and niacin.
  • Helps to relieve depression symptoms, promote good sleep and aid with weight loss.
  • Improves psychological state without increasing the amount of stored fat.
  • Enables the body to maintain control over the amount of serotonin produced using the enzyme L-tryptophan hydroxylase.
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    L-Tryptophan Supplement - Precursor of Serotonin to Improve Well-Being

    After nearly 15 years' absence in Europe, L-tryptophan, one of the essential amino acids in the diet, is back - available to buy once more in an authorised nutritional supplement. A precursor of serotonin, melatonin and niacin, tryptophan is a vitally important substance. Discovered in 1901, it has been used for decades to relieve depression, promote sleep or aid with weight loss.

    What benefits do studies show about L-Tryptophan?

    Serotonin plays a key role in many of the body's functions, and particularly in depression, anxiety, mood and appetite control. Many people eat excessive amounts of carbohydrates when they feel stressed, depressed or anxious. This results in a rise in cerebral serotonin and a temporary feeling of well being and security, but at the same time, an increase in fat stores. Tryptophan supplementation improves psychological state without inducing increases in the amount of stored fat. Several studies have demonstrated the benefits and efficacy of tryptophan.

    • Serotonin cannot cross the blood-brain barrier, so when levels are inadequate, only supplementation with either of its two precursors - tryptophan or 5-HTP - can raise them effectively.
    • The first studies using tryptophan to influence mood were conducted in the Fifties. Tryptophan supplementation was shown to be effective and free of side-effects in subjects suffering from mild to moderate depression.
    • Both on its own and combined with phototherapy, tryptophan is also an effective treatment for SAD (Seasonal Affective Disorder).
    • In cases of mild insomnia, tryptophan promotes drowsiness and good quality sleep.

    In 1990, its use in supplements was banned, after a single contaminated batch of tryptophan supplied by one Japanese manufacturer apparently led to the development of a deadly condition. It should be noted that this ban coincided with the launch of Prozac. Its use in drugs, infant formulas and parenteral food products, however, continued unhindered.

    What are the differences between L-tryptophan and 5-HTP?

    L-Tryptophan and 5-HTP are converted into serotonin following the same metabolic pathway. However, certain people react better to supplementation with L-tryptophan than with 5-HTP. This may be for a number of reasons.

    • With L-tryptophan supplementation, the body maintains control over the amount of serotonin produced using the enzyme L-tryptophan hydroxylase.
    • When 5-HTP is taken, some of it may find its way to the intestine where it can cause nausea. Besides, since serotonin cannot cross the blood-brain barrier, any serotonin produced outside of the brain is unable to penetrate it.
    • In some individuals, certain conditions, including severe depression, can prevent the passage of 5-HTP across the blood-brain barrier - this does not happen with L-tryptophan.

    L-tryptophan is available to buy in Supersmart's catalogue, providing benefits as an essential amino acid that is crucial for healthy body function and particularly, for the production of niacin.

    Daily serving: 2 tablets
    Number of servings per bottle: 60
    Quantity per serving
    L-tryptophan 1  000 mg
    Other ingredients: acacia gum, fructo-oligosaccharide.

    Each tablet contains 500 mg of L-tryptophan, one of 8 essential amino acids present in the diet. Tryptophan is a precursor of serotonin, melatonin and niacin.
    Directions for use
    Take one to two tablets a day. Do not take tryptophan alongside other substances such as 5-HTP which also increases serotonin levels, without medical supervision.
    4.4 /5 16 reviews
    4.6 / 5
    4.6 / 5
    Value for money
    4.3 / 5

    Reviews 16
    62 %

    CAMPO Mercedes
    todabia no he tomado espero a probarlo para hablar
    Semble être efficace pour l'insomnie avec 2 prises: au dîner et au coucher.
    MABLE Lucas
    Excellent rapport qualité prix
    Bernard BOUCHER
    Produit à base notamment de niacyne qui est je crois un neurotransmetteur dont je manquais
    super produit pour dormir et se détendre
    COLMARD Marie Laure
    Très bon produit qui me sert d anti depresseur
    Excellent produit
    Hans Busk
    Fabienne Vermynck
    Je me sens plus apaisée depuis que j’en prends.
    Ottimo integratore che fa quello per cui è nato.
    BIERLIER André
    Précurseur de la sérotonine et de la mélatonine, aide à l'endormissement et à garder un moral au top

    Synergy packs

    L-Tryptophan Supplement
    L-Tryptophan 500 mg
    Essential amino acid and precursor of serotonin, melatonin and niacin.
    34.00 €(41.38 US$)
    Advanced Sleep Formula Supplement
    Advanced Sleep Formula
    Relaxing, 100% natural formulation for improving sleep
    29.00 €(35.30 US$)
    Pack "Advanced Sleep Formula + L-Tryptophan"
    63.00 €(76.68 US$)
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    L-Tryptophan 500 mg
    34.00 €
    (41.38 US$)
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