Fody breaks down the six high-FODMAP trigger categories behind most IBS flares and pairs each with a certified alternative.
The foods to avoid with IBS cluster around six high-FODMAP trigger categories responsible for most symptom flares. This guide covers each category, explains why it triggers symptoms, and pairs every trigger with a tested and certified Low FODMAP alternative from Fody. For the full dietary framework, visit the IBS Diet Guide.
Onion and garlic are among the most concentrated dietary sources of fructans and appear in virtually every commercially prepared sauce, seasoning blend, marinade, and condiment as either fresh or powdered ingredients. Fructans are oligosaccharides the small intestine cannot digest and ferment rapidly in the large intestine, producing gas and triggering IBS symptoms.
Wheat products including bread, pasta, and flour-thickened sauces are also major fructan sources. Fody's tested and certified Low FODMAP Pasta Sauces, BBQ Sauce, Taco Sauce, and Mild Salsa are all formulated without onion or garlic.
Lactose, the primary sugar in animal milk, requires the enzyme lactase to digest. Insufficient lactase means undigested lactose ferments in the colon, making dairy a common category of IBS trigger foods. High-lactose sources to avoid during elimination include regular cow's milk, yogurt, soft cheeses such as ricotta, brie, and cream cheese, and ice cream. Hidden lactose also appears in conventional salad dressings, cream-based sauces, and flavoured coatings. Fody's Salad Dressings are dairy-free, vegan, and tested and certified Low FODMAP.
Excess fructose sources to avoid include honey, agave, high-fructose corn syrup, and high-fructose fruits including apples, pears, mangoes, and watermelon. GOS from legumes, lentils, and chickpeas ferments rapidly in the colon. Polyols, including sorbitol, mannitol, xylitol, and maltitol, are common in sugar-free products and occur naturally in stone fruits and mushrooms. Fody Snack Bars are made without sorbitol, mannitol, xylitol, or maltitol and are tested and certified Low FODMAP.
Most elimination-phase flare-ups are caused not by obvious high FODMAP whole foods but by hidden triggers in packaged products that appear safe. Six ingredient names to scan on every label: onion powder, garlic powder, inulin, chicory root, high-fructose corn syrup, and sugar alcohols such as sorbitol, mannitol, xylitol, and maltitol. Inulin and chicory root are added to many products marketed as high-fiber, prebiotic, or gut-health products and are high FODMAP triggers — fermentable carbohydrates that can be triggering in larger amounts for people with sensitive digestion. Fody's tested and certified Low FODMAP range contains none of these ingredients.
FODMAPs are the most clinically studied IBS trigger foods category, but several non-FODMAP foods can also trigger symptoms. Fried and high-fat foods stimulate strong gut contractions, accelerating transit and triggering cramping or diarrhea in some people with IBS. Caffeine from coffee, energy drinks, and high-caffeine teas increases gut motility and worsens loose-stool symptoms in some people with IBS. Alcohol disrupts gut bacteria balance and increases gut permeability; beer additionally contains wheat-derived fructans. Insoluble fiber from wheat bran and vegetable skins can worsen gas and diarrhea in people with IBS whose primary symptom is loose stools, even when the diet is otherwise Low FODMAP compliant.
During the elimination phase, the ingredient list rather than the nutrition panel is the primary reference. Scan the first five ingredients first: onion powder, garlic powder, or any onion or garlic derivative in that position indicates a high FODMAP product. Middle-label traps include inulin, chicory root, chicory extract, sorbitol, mannitol, xylitol, maltitol, isomalt, and high-fructose corn syrup. The term “natural flavour” may conceal onion or garlic derivatives. If a product is not FODMAP Friendly certified, treat “natural flavour” as a risk. With Fody's tested and certified Low FODMAP range, the label-reading step is done for you — every product is formulated without onion, garlic, and hidden FODMAP triggers.
Trigger: conventional pasta sauces and marinades with onion and garlic. Alternative: Fody Marinara, Tomato Basil, or Spicy Marinara at, tested and certified Low FODMAP.
Trigger: ketchup and BBQ sauce with onion powder and high-fructose corn syrup. Alternative: Fody Ketchup, Fody Original BBQ Sauce, and the Low FODMAP Starter Pack.
Trigger: salad dressings with garlic or dairy. Alternative: Fody Salad dressings.
Trigger: snack bars with inulin or sorbitol. Alternative: Fody Snack Bars, tested and certified Low FODMAP and made without any polyol sweeteners.
Explore Fody's full range of tested and certified Low FODMAP pantry staples.
Yes. Onion powder and garlic powder are as high FODMAP as their fresh equivalents and in some cases more concentrated, as dehydration concentrates fructans rather than removing them. This is the most common source of accidental FODMAP exposure during the elimination phase. A recipe that specifies no fresh onion or garlic is not safe if it uses seasoning blends, stocks, or sauces containing onion or garlic powder. Fody's tested and certified Low FODMAP sauces, seasonings, and condiments are all onion- and garlic-free.
Wheat is high in fructans and is restricted during the Low FODMAP elimination phase. The restriction is about fructan content, not gluten sensitivity. IBS and celiac disease are distinct conditions. Gluten-free grains including rice, oats, quinoa, and gluten-free pasta are generally safe alternatives during elimination. Small amounts of wheat as a minor ingredient may be tolerated by some individuals depending on total FODMAP load per serving. If unsure about personal wheat tolerance, work with a registered dietitian to assess and guide the reintroduction phase.
Most legumes are high in GOS and are restricted during the elimination phase. Lentils, chickpeas, black beans, kidney beans, and baked beans are all high FODMAP. Portion size affects FODMAP load: canned and thoroughly rinsed chickpeas are lower in GOS than dried cooked chickpeas and may be tolerated in small amounts by some individuals. During strict elimination, dietitians typically advise full avoidance of all legumes for the two-to-six-week period. Personalisation through systematic reintroduction determines individual legume tolerance after the elimination phase is complete.
People avoiding both gluten and high FODMAP foods face overlapping restrictions: wheat, rye, and barley are both gluten-containing and high in fructans, so removing them addresses both concerns. However, many gluten-free products are not Low FODMAP. Gluten-free breads, baked goods, and snack bars frequently contain apple juice, pear juice, high-fructose sweeteners, or inulin as replacements. Always check the full ingredient list of gluten-free products for hidden high FODMAP ingredients. The gluten-free label does not imply Low FODMAP. Fody Snack Bars are both gluten-free and tested and certified Low FODMAP.
Fody ships tested and certified Low FODMAP packaged foods across Canada. Products that are onion- and garlic-free include Pasta Sauces, Mild Salsa, Salad Dressings, condiments, and Snack Bars, including the high-fiber snack bar range. The Low FODMAP starter pack bundles five core certified pantry replacements in a single order for Canadians beginning the elimination phase.
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