In September 2020, a class-action lawsuit
was filed against Costco Wholesale Corp. for allegedly falsely marketing Optifiber Natural Prebiotic Fiber Supplement as “natural” when, according to plaintiffs, the supplement contains a synthetic ingredient (wheat dextrin). (Smyth et al v. Costco Wholesale Corp.
, Case No. 20-cv-4247, E.D.N.Y.)
For more of TINA.org’s coverage of natural claims, click here.