Category: mineral
⚠ Controversial ingredient
An inorganic source of selenium, an essential trace mineral for thyroid function and antioxidant defense.
Sodium selenite is an inorganic form of selenium with a narrower safety margin than organic forms (such as selenium yeast). It has lower bioavailability and higher potential for toxicity at elevated levels compared to organic selenium sources. Some premium pet foods use selenium yeast instead as a safer alternative.