If you have a dairy allergy, keep in mind that Oreos have milk as cross-contact.

https://www.freshnlean.com/blog/are-oreos-vegan/#:~:text=If%20you%20have%20a%20dairy%20allergy%2C%20keep%20in%20mind%20that%20Oreos%20have%20milk%20as%20cross%2Dcontact