How to identify high-FODMAP foodsUpdated 2 days ago

You can identify high-FODMAP foods by learning which food groups commonly contain FODMAPs, using trusted tools like the Monash FODMAP App, and paying close attention to portion sizes and ingredient labels. Personal tolerance varies, so accuracy and context matter.

Common high-FODMAP foods

Common high-FODMAP foods are found across many everyday food groups. Some examples by FODMAP type:

• Fructans: garlic, onions, wheat, leeks, artichokes
• GOS: beans, lentils, chickpeas, pistachios, cashews
• Lactose: milk, yogurt, soft cheeses, ice cream
• Excess fructose: apples, pears, mangoes, honey, watermelon
• Polyols: mushrooms, avocados, stone fruits, sugar-free gum

Serving size matters

FODMAP content is dose-dependent—some foods are low-FODMAP in small servings but become high-FODMAP in larger amounts. This means a food that feels safe one day may cause symptoms if eaten in a bigger portion. Understanding serving sizes is just as important as knowing which foods contain FODMAPs.

FODMAP stacking also plays a role. Stacking refers to eating several different low- or moderate-FODMAP foods in one sitting. These can add up and trigger symptoms, even if each food would be fine on its own.

Using reliable tools

The most reliable way to identify high-FODMAP foods is through laboratory-tested resources like the Monash University FODMAP Diet App. This app is considered the gold standard for FODMAP identification. It requires a one-time purchase and is widely considered worth it for anyone actively managing FODMAP sensitivities. The Monash app has:

• FODMAP levels for hundreds of foods
• Clear serving size guidance
• Traffic-light style ratings to indicate low, moderate, or high FODMAP content

If you're looking for a free starting point, our FODMAP Food Scanner lets you quickly check foods, get FODMAP information, and see how to use FODZYME® with that food. It's a helpful tool for everyday decisions, especially when you're still learning which foods to watch for.

Reading ingredient labels

Packaged foods can contain hidden sources of FODMAPs, even if the product seems gut-friendly. Watch for ingredients like high-fructose corn syrup, inulin, chicory root, or sugar alcohols ending in “-ol” (sorbitol, mannitol, xylitol). These ingredients are common in processed foods, protein bars, and sugar-free products.

Getting personalized guidance

FODMAP tolerance is highly individual. Working with a registered dietitian who specializes in digestive health can help you identify your personal triggers, navigate portion sizes confidently, and build a balanced, sustainable diet. Check out our resource to find a gut dietitian. This is especially helpful if symptoms are persistent or difficult to pinpoint.