Supplement Label Index

Compounds Brands Excipients Reports Trending New Data

Advertisement

Formula Twins / Iron

Iron

Iron and 1 near-identical products are sold under 2 different brand names — a near-twin Formula Twins cluster.

Product	Brand
Iron	Chapter Six
I is for Iron	Chapter One by Zahler

Advertisement

Based on 2 labels in the January 2026 NIH DSLD dump. DSLD is survey-sourced plus voluntary manufacturer submissions, not a market census; off-market status can lag actual retail availability; every value here is manufacturer-declared on the label, not independently lab-tested. See methodology.

Advertisement

Advertisement

Methodology Sources Sponsorship Data Changes About Privacy Contact

Contact: [email protected]

Label data is sourced from the NIH Dietary Supplement Label Database (DSLD), released under CC0. Excipient/additive regulatory data links to the Food Additive Index. Supplement Label Index does not rate products, recommend purchases, or provide health advice.