Who's behind One A Day? Check before you buy

One A Day belongs to Bayer AG through Bayer Consumer Care AG. One A Day is owned by Bayer AG, headquartered in Germany. No. The ultimate owner of One A Day, Bayer AG, is headquartered in Germany, not in the United States.

Bayer is a global enterprise with core competencies in the life science fields of health care and nutrition, headquartered in Germany.

Bayer Inc. (Canada) / Bayer HealthCare LLC (USA)