Who owns One A Day?
One A Day is owned by Bayer (Germany, XETRA: BAYN).[1]
This ownership is reported in official statements but has not yet been matched to a regulatory filing.
Key facts
- Current owner
- Bayer AG reported
- Owned since
- Not recorded
- Previous owner
- None recorded
- Owner HQ
- 🇩🇪 Germany, Leverkusen
- Origin
- 🇺🇸 United States
- Founded
- 1940
- Category
- Food › Nutrition & supplements › Vitamins & supplements
- Parent ticker
- XETRA: BAYN
- Last verified
- · 1 sources
About One A Day
One A Day is an American multivitamin brand launched in 1940 on the proposition that a single daily tablet was enough, at a time when supplements were taken several times a day. It is one of the two largest multivitamin brands in the United States alongside Centrum.
Ownership timeline of One A Day
Where One A Day sits in Bayer
Controlling ownership as of . Brands grouped under the entity that owns them; large groups are collapsed.
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Other brands owned by Bayer
Latest news about One A Day
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Frequently asked questions
Who is the parent company of One A Day?
The parent company of One A Day is Bayer, a publicly listed company headquartered in Germany.
Is One A Day American or German?
One A Day originated in the United States in 1940, but it is owned today by Bayer, which is headquartered in Germany. So One A Day is an American-origin brand under German ownership.
Is One A Day still owned by Bayer?
Yes. As of 6 September 2026, One A Day is still owned by Bayer. The ownership record was last checked against primary sources on that date.
Sources (1) & corrections
Last verified . Every ownership fact above is backed by one of these primary documents. Numbers in brackets in the text refer to this list.
- [1] Bayer AG Annual Report 2025 — Bayer AG, Annual report, published 10 March 2026; retrieved 6 September 2026.
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