INGREDIENT
Copper Sulfate Pentahydrate
A hydrated form of copper sulfate used as a trace mineral supplement.
Why it turns up in dog food
- Supplies copper for iron handling, connective tissue and coat pigment.
An ingredient on its own tells you very little.
What matters is how much of it there is and where it sits in the list. That is why we weigh
the top five rather than reacting to any single name further down.
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