Iron oxide is a natural source of iron. Magnesium oxide is a natural source of magnesium. Menadione sodium bisulfite complex is a source for vitamin K activity. Pangamic acid is vitamin B15. Potassium chloride is a high-potency, synthetic source of potassium.
Potassium citrate is a natural form of potassium.
Pyridoxine hydrochloride is a synthetic source of vitamin B6. Riboflavin is a synthetic source of vitamin B2. Selenium is an essential mineral. Sodium chloride is a synthetic form of salt - table salt. Sodium selenite is a synthetic form of the essential mineral selenium.