Olio di pesce di qualità DM?

What do you mean by “quality”? I’m sure they contain what it says on the box. If you actually lack those nutritions, it can be helpful to take supplements them.

They are food supplements and are therefore subject to food law and not pharmaceutical law. The manufacturer guarantees that it contains what is listed under ingredients.

DM and Doppelherz are both fine! I know some people are picky about the ratio of EPA and DHA in their fish oil or something though so you might want to check if this is fine for you.