CompoAtlas

Cystine in food supplements

91 supplements declared in France contain Cystine as a substance or active ingredient.

Declarations also use the name: L-cystine. Separate page, as the form (L or D) is not always stated.

Compl'Alim declarations. Compl'Alim, food supplement declarations (France), retrieved 23 October 2026.

What we know about this ingredient

Uses

  • Calculated removal (%): 75.1

  • Consumption (g per capita; approx.) in Germany (2009): 0.00611

  • Use (kg; approx.) in Germany (2009): >500

PubChem : NORMAN Suspect List Exchange · 2026-10-29 · DOI:10.1021/acs.est.5b03332.

Licence.

Use classification

  • Cosmetics -> Hair conditioning; Antistatic

PubChem : NORMAN Suspect List Exchange · 2026-10-29 · S13 | EUCOSMETICS | Combined Inventory of Ingredients Employed in Cosmetic Products (2000) and Revised Inventory (2006) | DOI:10.5281/zenodo.2624118.

Licence.

A molecule found naturally in plants or organisms; in a supplement it may be extracted from them, made by fermentation or synthesised: the declaration does not say which.

Basis: one CosIngThe European Commission's database of cosmetic ingredients. CAS and natural occurrence recorded in Wikidata (LOTUS database).

Wikidata: names of substances in six languages and taxa in which they occur (largely from the LOTUS database), retrieved 23 October 2026.

Natural occurrence recorded in Wikidata (LOTUS database): 25 taxa; examples: Morchella angusticeps, Morchella crassipes, Panax ginseng, Allium sativum, Cannabis sativa.

Wikidata: names of substances in six languages and taxa in which they occur (largely from the LOTUS database), retrieved 23 October 2026.

Associated research

ClinicalTrials.gov · A trial is not proof: it tests a hypothesis.

2026-11-01

Other names: L-cystine (English), L-Cystin (German), cistina (Spanish), cistina (Italian), Cistina (Portuguese).

Wikidata: names of substances in six languages and taxa in which they occur (largely from the LOTUS database), retrieved 23 October 2026.

Same substance in cosmetics: CYSTINE.

In plain words

À quoi il sert, selon les fabricants

Objectifs les plus souvent annoncés pour les compléments qui en contiennent (Cystine) : cheveux et ongles (61 produits), peau (10 produits), sport (8 produits), antioxydant (3 produits), solaire (1 produit).

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.

Health claims register (European Union): 0 authorised and 1 refused claim(s) for this substance.

EU Register of nutrition and health claims, retrieved 21 October 2026.

Compl'Alim ingredient list (France): listed.

Compl'Alim, reference list of ingredients, retrieved 21 October 2026.

United States, supplement labels (DSLD; supplements need no prior approval): 102 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.

Declared daily quantities

Declared daily quantities: Cystine
UnitProductsMedianMinimumMaximum
mg301000.009500

Calculated from Compl'Alim declarations that provide a quantity. These are quantities declared by manufacturers, not measurements, and preparation is not distinguished (powder, extract of varying concentration): differences between products can be very large.

Products