5-hydroxytryptophane in food supplements
24 supplements declared in France contain 5-hydroxytryptophane as a substance or active ingredient.
Declarations also use the name: L-5-Hydroxytryptophane. Separate page, as the form (L or D) is not always stated.
Other names in the Compl'Alim list: 5-HTP, Oxitriptan, 5-hydroxytryptophan.
Compl'Alim declarations. Compl'Alim, food supplement declarations (France), retrieved 23 October 2026.
What we know about this ingredient
Appearance
L-5-hydroxytryptophan appears as colorless to pale pink crystals. (NTP, 1992)
Associated research
ClinicalTrials.gov · A trial is not proof: it tests a hypothesis.
- NCT04520178 : Effects of 5HTP on the Injured Human Spinal Cord
ACTIVE_NOT_RECRUITING · PHASE2, PHASE3 · Spinal Cord Injuries · 2026-09-16 · 5-Hydroxytryptophan
- NCT05895747 : 5-HTP and Creatine for Depression R33 Phase
RECRUITING · PHASE2 · Major Depressive Disorder · 2026-08-27 · Low Dose 5-hydroxytryptophan (synonym declared in the registry); High Dose 5-hydroxytryptophan (synonym declared in the registry)
- NCT04160910 : 5HTP Regulation Of Asthma In Children
RECRUITING · PHASE2 · Mild or Moderate Asthma With Allergic Sensitization · 2026-10-01 · 5-Hydroxytryptophan
2026-11-01
In plain words
À quoi il sert, selon les fabricants
Objectifs les plus souvent annoncés pour les compléments qui en contiennent (5-hydroxytryptophane) : humeur (6 produits), sommeil (5 produits), ménopause (3 produits), minceur / brûleur (2 produits), système nerveux (2 produits).
Ce sont les objectifs déclarés par les fabricants à l'administration, pas des effets démontrés. Sur l'emballage, seules les allégations de santé autorisées par l'Union peuvent être écrites.
Compl'Alim, food supplement declarations (France), retrieved 23 October 2026.
Nouvel aliment ou pas
Classé par le catalogue comme nouvel aliment non encore autorisé : sous la forme visée par l'entrée, il ne devrait pas être vendu dans l'Union tant qu'il n'est pas autorisé. Le catalogue est informatif ; une déclaration en France (« commercialisation possible ») n'est pas une autorisation.
Le catalogue de la Commission est indicatif : il ne remplace pas une décision.
Novel Food Catalogue (status of products under Regulation (EU) 2015/2283), retrieved 21 October 2026.
What the registers say, country by country
Each line repeats what an official register says on the date it was consulted. Not being in a register means neither allowed nor banned.
Novel food catalogue (European Union), entry “5-hydroxytryptophan”: Classé par le catalogue comme nouvel aliment non encore autorisé : sous la forme visée par l'entrée, il ne devrait pas être vendu dans l'Union tant qu'il n'est pas autorisé. Le catalogue est informatif ; une déclaration en France (« commercialisation possible ») n'est pas une autorisation.
POL-NF-00063. Novel Food Catalogue (status of products under Regulation (EU) 2015/2283), retrieved 21 October 2026.
Health claims register (European Union): 0 authorised and 2 refused claim(s) for this substance.
EU Register of nutrition and health claims, retrieved 21 October 2026.
Compl'Alim ingredient list (France): listed and flagged as a novel food.
Compl'Alim, reference list of ingredients, retrieved 21 October 2026.
Canada, licensed natural health products (LNHPD): 4 products.
Licensed Natural Health Products Database (LNHPD), Health Canada: licensed products, ingredients, doses, uses and risks, retrieved 27 October 2026.
Contains information licensed under the Open Government Licence – Canada (Health Canada, LNHPD)
Licence du gouvernement ouvert – Canada 2.0 (OGL-Canada 2.0)
United States, supplement labels (DSLD; supplements need no prior approval): 765 products.
Dietary Supplement Label Database (DSLD), US National Institutes of Health: current and off-market labels, retrieved 27 October 2026.
Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (CC0); US market labels.
Poland, notified supplements: 1 product.
GIS, products notified in Poland, retrieved 27 October 2026.
Główny Inspektorat Sanitarny (GIS), Rejestr produktów objętych powiadomieniem
Products
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