Bayer One A Day Multivitamins

March 2019: Following a jury trial, judgment was entered in favor of Bayer.

March 2018: The Ninth Circuit Court of Appeals denied the petition for permission to appeal but granted the company’s request to file another brief supporting the petition.

November 2017: A federal judge certified three statewide classes for the three remaining named plaintiffs’ home states (specifically, California, Florida, and New York) but did not certify a nationwide class. In the same court order, the judge denied Bayer’s motion for summary judgment. Later in November, the company filed a Petition requesting permission to appeal the decision to grant class certification.

March 2016: The claims of two of the named plaintiffs (Gallagher and Cordaro) were dismissed without prejudice, the reasons for which have not been disclosed. Claims of other named plaintiffs (Farar, Lopez, and Cosgrove) will move forward.

August 2015: A federal judge denied Bayer’s motion to dismiss. To read the Court Order and learn more, click here.

April 2015: After the plaintiffs refiled their heart health and immunity claims in an amended complaint in March 2015, Bayer filed a motion to dismiss these claims.

March 2015: A federal judge dismissed some of the false advertising claims in this lawsuit. Specifically, the judge dismissed the claims that the company deceptively markets the multivitamins as supporting heart health and immunity finding that the claims were preempted by the Federal Food, Drug, and Cosmetic Act. The judge dismissed these claims without prejudice, meaning that the plaintiffs can refile the claims. The judge allowed the claims that the company deceptively markets the multivitamins as supporting physical energy to move forward,

October 2014: A class-action lawsuit was filed against Bayer for allegedly deceptively marketing and labeling One A Day multivitamins as providing consumers with various health benefits – such as supporting heart health, immunity, and physical energy – without scientific evidence to support such claims. (Gallagher et al v. Bayer AG, Bayer Corporation, and Bayer Healthcare LLC, Case No. 14-cv-04601, N.D. Cal.).

For more information about other class-action lawsuits filed against Bayer and’s coverage of the company, click here.


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When a complaint is dismissed without prejudice, an amended version of the complaint can be refiled.

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