April 11, 2014 11:11 AM EDT

Subway said Friday that its sandwich shops will stop using bread that contains a chemical found in yoga mats by next week, following a rash of bad publicity earlier this year.

The company, the single largest chain restaurant in the world with 40,000 locations worldwide, had signaled in February that it would stop using the bread, after a food blogger launched an “eat fresh—not yoga mats” campaign—playing on Subway’s company motto. Chief marketing officer Tony Pace told the Associated Press the company would be done phasing out the bread in a week.

“You see the social media traffic, and people are happy that we’re taking it out, but they want to know when we’re taking it out,” Pace said. “If there are people who have that hesitation, that hesitation is going to be removed.”

The FDA-approved ingredient, azodicarbonamide, is banned in the European Union and Australia due to health concerns.

Subway says that the ingredient is helpful in making dough more stable, and is safe, common and acceptable, but that it began removing the ingredient last year. It’s known as a “chemical foaming agent” for plastics and is found in over 130 other brands besides Subway, including Jimmy Dean, Ball Park, Pillsbury Wonder and supermarket breads, according to the Environmental Working Group.

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