Collagen kosher?

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Rabbi,
Does powdered collagen need to be kosher?
Thanks so much

Unflavored pure collagen as an ingredient is always kosher

This is flavored is it kosher?

yes

What if you mix it with coffee which is giving it flavor?

Once the item has become flavorless and lost its original non kosher status, it doesn’t get it back by adding flavor to it. Only if the item itself regained its original flavor would it (maybe) be a problem.