Other ingredient
Iron oxide in supplements
Iron oxide appears as an other ingredient (a filler, capsule, coating or flavor, outside the Supplement Facts box) on 55 products in the NIH Dietary Supplement Label Database (version 9.4.0, January 2026).
Every product listing iron oxide
0 products, A to Z by name (page 1 of 1), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.