One A Day
Bayer's one-a-day multivitamin from a pharma major.
A mainstream US multivitamin brand from Bayer, built around a one-tablet-a-day format.
Brand facts
- Founded
- 1940
- Headquarters
- United States (Bayer)
- Parent / operator
- Bayer
- Origin
- United States
About One A Day
A long-familiar US multivitamin from pharma major Bayer. Its one-tablet-a-day convenience and age/gender/goal-specific lines give it broad mass-market reach.
What sets One A Day apart
Its strengths are big-pharma trust and clear, goal-specific product lines.
Ingredient sourcing
Uses standard vitamin and mineral raw materials.
Manufacturing & quality
Manufactured under a pharmaceutical company's quality systems.
Certifications & testing
- Pharmaceutical-company quality systems
Signature products
- One A Day Men's / Women's
- One A Day 50+
Focus categories
- Multivitamins
- Age-specific
- Minerals
Price positioning
Low-to-mid — value in convenience and trust.
Where to buy in Japan
Available via iHerb, parallel imports and Amazon.co.jp.
Best for
People who want easy daily basics in one tablet.
Things to keep in mind
Doses are modest and it can be hard to find in Japanese stores.
Prices are sample data. Check the retailer's site for the current price.