
Why not e mail the company rather that asking people on here who have no way of knowing why this was done ? Just a thought ;)
As EU Law state that the contents much be correctly listed & it is made in the Netherlands they have to comply with the EU law
From their site
"Quistel® products are 100% natural , no chemical ingredients added!
The 25 plant extracts of which Quistel® is made contain lots of vitamins, minerals and proteins. All plants are especially grown for us on selected grounds in France"
This
might allay your fears Ethylene Glycol is the compound that causes the problem, "Propylene glycol is generally regarded as safe for use in food."