L-cystine in food supplements
688 supplements declared in France contain L-cystine as a substance or active ingredient.
Declarations also use the name: Cystine. Separate page, as the form (L or D) is not always stated.
Other names in the Compl'Alim list: L-cystin.
Compl'Alim declarations. Compl'Alim, food supplement declarations (France), retrieved 23 October 2026.
In plain words
À quoi il sert, selon les fabricants
Objectifs les plus souvent annoncés pour les compléments qui en contiennent (L-cystine) : cheveux et ongles (457 produits), peau (64 produits), antioxydant (39 produits), sport (18 produits), immunité (10 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.
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.
Compl'Alim ingredient list (France): listed.
Compl'Alim, reference list of ingredients, retrieved 21 October 2026.
Canada, licensed natural health products (LNHPD): 32 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): 28 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.
Malaysia, registered products: 15 products.
NPRA, Malaysian pharmaceutical products register, retrieved 27 October 2026.
Ministère de la santé de Malaisie / NPRA, Pharmaceutical Products, CC BY 4.0
Poland, notified supplements: 2 products.
GIS, products notified in Poland, retrieved 27 October 2026.
Główny Inspektorat Sanitarny (GIS), Rejestr produktów objętych powiadomieniem
Taiwan, registered products: 12 products.
TFDA, Taiwan tablets, capsules and medical nutrition registers, retrieved 27 October 2026.
Taiwan Food and Drug Administration (TFDA), Open Government Data License, version 1.0
Products
- Kératine + gélule, withdrawn from the market
- L-CYSTINE 500 gélule, withdrawn from the market
- Léro Phanères Léro, capsule, withdrawn from the market
- METALCHEL'O gélule, withdrawn from the market
- MULTIVITHAIR VDN, capsule, withdrawn from the market
- Natural Hair Booster gélule, withdrawn from the market
- Nutrition Beauté Nahrin, gélule, flavour aucun, withdrawn from the market
- N°14 CAPITAL CHEVEUX EQUI-NUTRI SCRL, gélule, withdrawn from the market
- Ongles Cheveux gélule, withdrawn from the market
- Ongles et Cheveux gélule, withdrawn from the market
- PANTOGAR STRONG PANTOGAR STRONG MERZ ITALIA, capsule, withdrawn from the market
- PECEOX gélule, withdrawn from the market
- PHANERES + Laboratoires MARTIN-PRIVAT Santé, gélule, withdrawn from the market
- PRO KERACYS CHEVEUX 4 en 1 GRANIONS, comprimé, flavour /, withdrawn from the market
- Peceox Nurilia, autre : gelule + comprimé, withdrawn from the market
- Physiocap Laboratoires Yves Ponroy, gélule, withdrawn from the market
- Phytocapil VITALYS ALPES, gélule, withdrawn from the market
- Prioforta Redcare, gélule, withdrawn from the market
- Prioforta Redcare, gélule, withdrawn from the market
- Procrelia - Femme Nurilia, comprimé, withdrawn from the market
- R CAPS CHUTE CLINERIENCE, comprimé, withdrawn from the market
- Richelet Protection Cellulaire Selenium + L-cysteine - Force du cheveu capsule, withdrawn from the market
- Sereclat+ gélule, withdrawn from the market
- TOTAL CHEVEUX & ONGLES DIET HORIZON, comprimé, withdrawn from the market
- VITALFAN ANTICHUTE REACTIONNELLE RENE FURTERER, capsule, withdrawn from the market
- Vita Hair + gélule, withdrawn from the market
- Vitalité Ongles et Cheveux comprimé, withdrawn from the market
- Vitalité ongles & cheveux PHYDERMA, comprimé, withdrawn from the market