Skip to Content

Food for Thought: Florida District Court Denies Class Certification Based on Failure to Show Ascertainability

Mirabella v. Vital Pharmaceuticals, Inc., No. 12-62086-CIV-Zloch, 2015 WL 1812806 (S.D. Fla. Feb. 27, 2015)

Soda Can

In Mirabella, consumers sued the manufacturer of Redline Xtreme Energy Drink, alleging that the manufacturer concealed the dangerous side effects of the energy drink. Plaintiffs requested relief for (1) violations of Florida’s Deceptive and Unfair Trade Practices Act (FDUTPA); (2) unjust enrichment; (3) breach of implied warranty of merchantability; and (4) violations of the Magnuson-Moss Warranty Act. Plaintiffs sought to certify a nationwide class action on behalf of all U.S. citizens who purchased Redline Xtreme since October 2008. The Southern District of Florida denied class certification because the proposed class was not clearly ascertainable given the product’s low price (consumers would not keep receipts), the number of substantially similar products (consumers could not reliably declare class membership), and defendant did not have records identifying individual consumers.

In Mirabella, individual plaintiffs Adam Mirabella and Kristen Arrendell filed an action against Vital Pharmaceuticals, Inc. as the manufacturer of Redline Xtreme Energy Drink, claiming Vital Pharmaceuticals failed to warn consumers that consuming the product could cause adverse side effects such as chills, sweating, vomiting, convulsions, chest pain, and rapid heartbeat. Plaintiffs alleged violations of FDUTPA, unjust enrichment, breach of implied warranty of merchantability, and violations of the Magnuson-Moss Warranty Act. The plaintiffs requested that the court certify a nationwide class of “All United States Citizens who have purchased the REDLINE Xtreme Energy Drink, during the period extending from October 2008, up to the date notice is provided to the class.”

In addition to the requirements specified in Federal Rule of Civil Procedure 23(a), a plaintiff seeking class certification must first establish that the proposed class is “adequately defined and clearly ascertainable.” In Mirabella, the Southern District of Florida held that the proposed class was not clearly ascertainable “since the class may not be ascertained on the basis of objective criteria.” The court noted several factors that supported this conclusion:

  1. The nature of the purchase undermined the ascertainability of the putative class. Each Xtreme Energy Drink is sold for less than $3. Purchasers were not likely to retain receipts or other records of purchase.
  2. There are a variety of Redline products, including Redline Energy Drink RTD, that are substantially similar to the product at issue. These other products (that are not at issue in this case) contain substantially similar ingredients and are bottled in similar containers. Without physical receipts, would-be class members, based on memory alone, would need to recall whether they drank the product at issue or a substantially similar product. As such, a “subjective memory problem” subsisted. “The ‘subjective memory problem’ is present when a proposed class of individuals is unascertainable because there is no good way to identify such individuals and the court cannot expect members of the class to recall the cumulative total of the product which they have consumed.”
  3. Vital Pharmaceuticals’ distribution/sales model increased the likelihood that the class was unascertainable. Defendant sells most of its products through distributors who, subsequently, sell to retailers. Plaintiffs would thus not have adequate documentation to establish the identity of the end of the line consumers, i.e., potential class members.

Plaintiffs argued generally that ascertaining class membership could be accomplished through a nationwide notice program advertised with major media outlets and through use of an experienced third-party administrator. However, the court opined that any proposed protocol for a class administrator would not mitigate the potential subjective memory problem associated with self-identification. As such, the court held that plaintiffs failed to prove the threshold issue of ascertainability and plaintiffs’ motion to certify class was denied.

Read more significant court decisions affecting the food industry in Food for Thought: 2015 Litigation Annual Review.

©2024 Carlton Fields, P.A. Carlton Fields practices law in California through Carlton Fields, LLP. Carlton Fields publications should not be construed as legal advice on any specific facts or circumstances. The contents are intended for general information and educational purposes only, and should not be relied on as if it were advice about a particular fact situation. The distribution of this publication is not intended to create, and receipt of it does not constitute, an attorney-client relationship with Carlton Fields. This publication may not be quoted or referred to in any other publication or proceeding without the prior written consent of the firm, to be given or withheld at our discretion. To request reprint permission for any of our publications, please use our Contact Us form via the link below. The views set forth herein are the personal views of the author and do not necessarily reflect those of the firm. This site may contain hypertext links to information created and maintained by other entities. Carlton Fields does not control or guarantee the accuracy or completeness of this outside information, nor is the inclusion of a link to be intended as an endorsement of those outside sites.


The information on this website is presented as a service for our clients and Internet users and is not intended to be legal advice, nor should you consider it as such. Although we welcome your inquiries, please keep in mind that merely contacting us will not establish an attorney-client relationship between us. Consequently, you should not convey any confidential information to us until a formal attorney-client relationship has been established. Please remember that electronic correspondence on the internet is not secure and that you should not include sensitive or confidential information in messages. With that in mind, we look forward to hearing from you.