How come on some bottles of vitamins it says to take on an empty stomach, others it says to eat a meal with?

Question by Guns n Roses: How come on some bottles of vitamins it says to take on an empty stomach, others it says to eat a meal with?
on collagen and hyaleronic acid supplements it says to wait 20 minutes before eating and then on other vitamins it says to take with food , for example biotin


Best answer:

Answer by knicname
It has to do with how the specific supplement is metabolized & digested.
Some need the stomach acid of an empty stomach & some need food to mix with to be digested.

Add your own answer in the comments!