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Ingredient · Vitamin Mineral

Ferrous sulfate

Cleaner · 7/10, higher is cleaner

How we reached this

Iron(II) sulfate. Most common iron-fortification form in infant formula because of relatively good bioavailability (~10-15%). FDA GRAS. Concern at very high supplementation: GI distress; risk is dose-dependent.

Sources · 1

Products containing this · 2

About this rating

Ratings run 1–10, higher is cleaner, and are set editorially against the sources above — see the methodology page for how an ingredient rating becomes part of a product score. Last reviewed 2026-05-25.