"A synthetic selenium source used to meet mineral requirements."
Selenium is an essential trace mineral, but it has one of the narrowest safety margins of any nutrient — the gap between a beneficial dose and a toxic one is small compared to most minerals. AAFCO tightly caps how much can be used, and at those regulated levels it is safe; it's simply a mineral worth mentioning because the same substance in a larger dose would not be.
A real but unresolved concern: often an ongoing FDA/AAFCO research question (like the grain-free/DCM investigation), a common allergen, or a vague-but-not-alarming label claim. -2.5 pts deducted.
Rated C (-2.5 pts) by PetPro-tectors™. Selenium is an essential trace mineral, but it has one of the narrowest safety margins of any nutrient — the gap between a beneficial dose and a toxic one is small compared to most minerals. AAFCO tightly caps how much can be used, and at those regulated levels it is safe; it's simply a mineral worth mentioning because the same substance in a larger dose would not be.
A synthetic selenium source used to meet mineral requirements.