Histamine intolerance can look like as little as a runny nose while/after eating to a flushed face, diarrhea, bloating, and even vomiting after eating high histamine foods. Ruminant meat is not particularly high in histamines but for sensitive people, beef, particularly aged beef can cause an overload of histamine in the body. Histamine intolerance is often caused by a damaged gut. And once the gut is damaged, it can prevent gut healing if there's an excess intake that your body cannot manage. A DAO enzyme can help your body breakdown histamine significantly. Mikhaila takes double the dose of this supplement 20 minutes before eating each meal. Recommended for people with damaged guts.