MAO inhibitors can cause dangerous blood pressure spikes when combined with tyramine-rich foods like aged cheese, soy sauce, and cured meats. Learn which foods to avoid, how different MAOIs affect risk, and what to do if you accidentally eat something risky.
Tyramine-Rich Foods: What You Need to Know Before You Eat
When you eat tyramine-rich foods, a naturally occurring compound found in aged, fermented, or spoiled foods that can trigger dangerous blood pressure spikes. Also known as tyramine-containing foods, it isn't harmful for most people—but if you're taking certain medications, it can turn a simple snack into a medical emergency.
This isn’t theoretical. People on monoamine oxidase inhibitors, a class of antidepressants and Parkinson’s medications that block the enzyme that breaks down tyramine. Also known as MAOIs, they are commonly prescribed for depression, anxiety, and movement disorders have ended up in the ER after eating aged cheese, cured meats, or tap beer. The body can’t process tyramine properly when MAOIs are active, so levels build up fast—pushing blood pressure to dangerous levels. That’s why doctors don’t just warn about these foods—they insist on it. And it’s not just MAOIs. Some antibiotics, decongestants, and even herbal supplements like St. John’s wort can interact the same way.
So what’s actually on the list? aged cheeses, like cheddar, blue, parmesan, and Swiss, where tyramine forms as proteins break down over time are the most common offenders. cured or smoked meats, including salami, pepperoni, and corned beef are next. Fermented soy products like miso and soy sauce, overripe bananas, draft beer, and red wine also pack a punch. Even leftovers sitting too long in the fridge can become risky. It’s not about being perfect—it’s about knowing what to limit, especially if you’re on medication that affects how your body handles tyramine.
You don’t need to live on plain rice and boiled chicken. Many people on MAOIs eat small amounts of these foods without issue—but only if they’re careful. Timing matters. A slice of aged cheddar with your dinner is different than snacking on it all day. Freshness matters too—buying smaller portions and using them quickly reduces risk. And if you’re unsure whether your meds interact with tyramine, check with your pharmacist. They’ve seen this before—and they can tell you exactly what’s safe in your case.
The posts below cover real-world cases and practical advice from people who’ve navigated these restrictions. You’ll find stories about managing diet while on antidepressants, how to read labels for hidden tyramine, what to do if you accidentally eat something risky, and how to talk to your doctor without sounding alarmist. This isn’t about fear—it’s about control. Knowing what’s in your food and how it reacts with your meds lets you live well, safely, and without guesswork.