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L-TRYPTOFAAN 500mg [Amino acids]

The essential amino acid L-tryptophan can be converted into Serotonin and Melatonin in our brains.
natural energy L-TRYPTOFAAN 500mg
Prijs : € 60 tabletten/comprimés
(CNK: 3002-193) at your pharmacist

For the conversion of L-tryptophan into Serotonin and Melatonin, Vitamin B6 (Pyridoxine) and B3 (Niacin) are required as co-factors.  To rule out deficiencies of these nutrients, L-tryptophan is ideally combined with vitamin B complex®.


Instructions for use
2x1 tablet juste before bed with a glass of water.

At the intake of MAO inhibitors is the use of L-tryptophan contraindicated.

 Do not exceed the recommended daily dose.
Keep out of reach of young children.
Nutritional supplements should not replace a varied and balanced diet and a healthy lifestyle.
Children, pregnant women and women who are breastfeeding, consult your pharmacist before use.
Check with simultaneous intake of medicines.
No long-term use without professional advice.

NUT 1429/24

Range of usage


Composition per 2 tablets
L-tryptophan 1000 mg, Bulking agents (Microcrystalline cellulose, Dicalcium phosphate), Stabilizer (Polyvinylpyrrolidone), Anti-caking agents (Magnesium stearate, silicon dioxide)
Psychiatry Res 2002 Mar;109(2):129-35 The tryptophan depletion test: impact on sleep in primary insomnia - a pilot study. Riemann D, Feige B, Hornyak M, Koch S, Hohagen F, Voderholzer U.

Neuropsychopharmacology 2001 Nov;25(5 Suppl):S40-4 Rapid tryptophan depletion plus a serotonin 1A agonist: competing effects on sleep in healthy men. Moore P, Seifritz E, Schlosser A, Greenfield D, Stahl S, Rapaport M, Kelsoe J.

News Physiol Sci 2000 Oct;15:260-264 Tryptophan-Free Diets: A Physiological Tool to Study Brain Serotonin Function. Fadda F.

Z Arztl Fortbild Qualitatssich 2001 Jan;95(1):11-6 Drug for the treatment of sleep disorders--review

Arch Gen Psychiatry 2001 Feb;58(2):200-2 Comment on:
The mood-lowering effect of tryptophan depletion: possible explanation for discrepant findings. Van der Does AJ.

Adv Exp Med Biol 1999;467:705-10 The significance of tryptophan in infant nutrition. Heine WE.

Adv Exp Med Biol 1999;467:697-704 The role of tryptophan in fatigue in different conditions of stress. Castell LM, Yamamoto T, Phoenix J, Newsholme EA.

Adv Exp Med Biol 1999;467:35-42 The tryptophan depletion test. Impact on sleep in healthy subjects and patients with obsessive-compulsive disorder.
Huwig-Poppe C, Voderholzer U, Backhaus J, Riemann D, Konig A, Hohagen F.

Lippincotts Prim Care Pract 1999 May-Jun;3(3):290-304 Dietary supplements used in the treatment of depression, anxiety, and sleep disorders.
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