Food supplements and ordinary foodstuffs enriched with nutrients are regulated by Royal Decree of 30 May 2021 (available in Dutch and French).
This decree contains, among others, the following items:
- the minimum and maximum amounts of vitamins and minerals per daily portion;
- a notification procedure before launching products on the market;
- requirements for labelling and advertising.
The allowed chemical forms of vitamins and minerals are laid down in Ministerial Decree of 21 May 2003 (available in Dutch and French). For fortified foods they are laid down in the Regulation 1925/2006 (consolidated version of 26 july 2017).