Supplement Label Index

Compounds Brands Excipients Reports Trending New Data

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Formula Twins / E-200

E-200

E-200 and 1 near-identical products are sold under 2 different brand names — a exact-twin Formula Twins cluster.

Product	Brand
E-200	21st Century
Vitamin E 200 mg (400 IU)	GNC

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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.

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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.