Yep! This! My dad has celiac and he ate something that had gluten in it and wanted some Pepto from the gift shop. They dont sell it there because they want you to go to the ship doc if you have those symptoms. He had to quarantine for 24 hrs in his stateroom. Lesson learned! Definitely bring your own Pepto/Immodium/Bonine/Dramamine....basically allllll the meds. They're double the price onboard usually. It's always better to have it and not need it.