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One A Day

Mass-market multivitamin traceable to a named US factory - rare in this category.

Status: Watchlist
Website
oneaday.com
HQ
Germany
Manufacturing
USA
Ownership type
Conglomerate subsidiary
Parent
Bayer AG
Status since
2026-08-25

Ownership

Long-held Bayer consumer health brand.

Why Watchlist

Genuinely own-plant and traceable to a named facility, better than most of this set, but no third-party verification of contents on any SKU.

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