Ferrous Sulfate in Dog and Cat Food

An iron source. Iron carries oxygen in the blood, and meat supplies much of it, with the mineral supplement making up the rest. Ferrous sulfate is the inorganic form; iron proteinate or chelate is the same mineral bound to a protein fragment, which brands describe as more absorbable. Either is normal. Not an allergen.

How it appears on labels

You may see it listed as iron sulfate, iron, iron proteinate, iron amino acid chelate, iron amino acid, iron amino acid complex.

Find foods with or without it

• Foods that contain ferrous sulfate
• Foods without ferrous sulfate

See every ingredient we explain

Sources

• AAFCO nutrient profiles