Color-changing Oreos spark stomach complaints

X users on May 20 said Marvel-themed color-changing Oreo cookies left them with stomach pain, nausea and diarrhea, turning a limited-edition snack into a small online food-safety debate. The posts centered on Oreo’s “Stuf of Legends” and related “Stuf of Doom” products, which the company markets as its first cookies with color-changing creme. Oreo’s website says consumers can make the creme change color by licking it, and the product pages describe the cookies as a Marvel collaboration with “Masked Decadence” flavored filling. As of May 21, U.S. Food and Drug Administration recall pages did not show an Oreo recall tied to the product, and Oreo was still listing the cookies for sale. ### Which Oreo product are people talking about? Oreo’s own product pages identify the item as the Marvel “Stuf of Legends” line, a limited-edition release with color-changing creme, plus a “Stuf of Doom” variant tied to Doctor Doom. ABC News reported on Jan. 21 that the cookies would go on sale on Feb. 2, 2026, calling them a first-of-its-kind Oreo that changes color. Oreo says the creme in “Stuf of Legends” changes from gray to blue, while the “Stuf of Doom” version changes from black to green. (oreo.com) ### What are people on X actually claiming? A May 20 X post cited in the source briefing warned others after the user said the cookies caused stomach problems. The broader thread described abdominal pain and urged caution, and commenters on social media speculated about food sensitivities or reactions to coloring ingredients. Those posts are anecdotal accounts from consumers, not findings from a regulator, manufacturer or published medical investigation. (abcnews.com) ### Do the ingredients show anything notable? Oreo’s product listing for Marvel “Stuf of Legends” says the cookies contain sugar, enriched flour, palm oil, cocoa, cornstarch, high fructose corn syrup and several additives, including Blue 1, Red 40 Lake and Blue 1 Lake. The same listing says the product contains wheat and soy. Oreo’s broader campaign page separately describes the cookies as having “same great taste,” but the ingredient list confirms the color-changing line uses added dyes. (iwaspoisoned.com) ### Has Oreo or FDA announced a recall? The FDA’s recalls and safety alerts page showed no Oreo recall as of May 21. The agency’s recalls dashboard says its data is updated weekly and points users to enforcement reports and public notices for detail, but the main recalls page did not list Oreo among recent food recalls visible there. Oreo’s own site also continued to list the Marvel cookies in its shop, including a two-pack of “Stuf of Doom” priced at $10.58 and a four-pack “Stuf of Legends” bundle priced at $19.99. (oreo.com) ### So what can be said with confidence right now? As of Thursday, May 21, the verifiable facts are narrower than the online discussion. Oreo and Marvel launched a color-changing cookie line in February, the ingredient list includes artificial color additives, consumers posted complaints on X on May 20, and no FDA recall was visible in the agency’s public recall listings reviewed for this story. What cannot be confirmed from the available public evidence is whether the cookies caused the reported symptoms, how many people were affected, or whether any health agency is investigating. (fda.gov) ### What should readers watch next? The next concrete checkpoints are Oreo or Mondelēz statements, any update to FDA recall or enforcement pages, and whether the company changes the product’s sale status on Oreo.com. As of May 21, the Marvel Oreo pages remained live, including the “Stuf of Doom” listing and the “Stuf of Legends” product pages. (oreo.com) (abcnews.com)