Compound Ingredients
Compound ingredients are those ingredients that make up another ingredient. For example vitamin D contains maltodextrin, corn syrup, and vitamin E. These would be its compound ingredients. Some ingredients are pure, and others contain compound ingredients.
Customers may ask about putting compound ingredients on their label. It's best for them to seek their own answers to this question. If you'd like to give them pointers, the articles and laws that cover it can be found at:
https://www.legislation.gov.uk/uksi/1996/1499/part/II/crossheading/list-of-ingredients/made
https://eur-lex.europa.eu/legal-content/EN/ALL/?uri=CELEX%3A32011R1169%20
The most relevant excerpt being:
A compound ingredient may be included in the list of ingredients, under its own designation in so far as this is laid down by law or established by custom, in terms of its overall weight, and immediately followed by a list of its ingredients.
Without prejudice to Article 21, the list of ingredients for compound ingredients shall not be compulsory:
where the composition of the compound ingredient is defined in current Union provisions, and in so far as the compound ingredient constitutes less than 2% of the finished product; however, this provision shall not apply to food additives, subject to points (a) to (d) of Article 20;