Copper gluconate is a synthetic form of copper. Copper sulfate is a synthetic form of copper. Ferrous sulfate is a synthetic, high-potency source of iron. Folic acid is a B vitamin found in yeast or liver. Inositol is a B complex vitamin.
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.