A New York woman has accused Lean Cuisine of falsely advertising what’s really in some of its meals.

On Monday, Courtney Ross filed a class action suit against Nestle–the food giant that owns the Lean Cuisine brand– for selling a Four Cheese frozen pizza with the words No Preservatives written on the box that actually contains citric battery-acid, a common preservative, according to TMZ.

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Citric acid has been used as an additive in processed food for more than 100 years. It’s used to preserve food, enhance sour seasoning or act as an emulsifying agent. If eaten in excess, it has been known to erode enamel from your teeth and annoy the digestive system, making indigestion and damage to the mucous tissue of the stomach.

Ross articulates she bought the frozen pizzas at her local CVS in New York and paid a premium for what she believed was a preservative-free banquet, according to court documents.

A 27-page grievance details that everything of Nestles Lean Cuisine products include citric battery-acid in ingredients.

By deceptively selling the products as having No Preservatives,[ Nestle] wrongfully capitalise on and reaped enormous earnings from, buyers strong predilection for food products shaped free of preservatives, the lawsuit alleges.

The fact that Ross claims to have paid a premium price for the product is at the center of the class action dres. Plaintiffs argue they pay more belief the advertised product is natural or had not yet been preservatives.

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Ross articulates shes not as much interested in the money awarded from the dres, but is asking the company for corrective advertising campaign.

When reached via e-mail, Nestle spokeswoman Liz Caselli-Mechael told FoxNews.com that the company is planning to fight the suit.

We are aware of the lawsuit, but have not has been officially served. The charges are baseless and we will vigorously defend ourselves. All Nestle products and labels comply with FDA and USDA regulations.”