With IBS, the trigger is rarely the headline ingredient — it's the inulin in a 'healthy' bar, the onion powder in a sauce, or the sorbitol in a sugar-free sweet.
PickEat reads the full list and flags common FODMAPs and gut irritants, so a quick scan tells you whether a product is likely to sit well.
A 'high-protein' or 'high-fibre' snack bar often adds inulin or chicory root fibre — both high-FODMAP — so a bar marketed as gut-friendly can be a trigger.
Why IBS triggers are so hard to pin down
Irritable bowel syndrome doesn't have one villain. For most people it's a handful of fermentable carbohydrates — collectively called FODMAPs — that draw water into the gut and ferment, producing the bloating, cramping and urgency that define a bad day. The catch is that they're dose-dependent and individual: a small amount might be fine, a larger amount isn't, and your personal list differs from the next person's.
Because the reaction is often delayed by hours, it's genuinely hard to connect a symptom back to the food that caused it. That's why people with IBS so often feel like they're guessing — and why seeing a product's FODMAP load *before* eating it is so much more useful than working backwards afterwards.
The FODMAP groups hiding in packaged food
Fructans are the big one. They're concentrated in wheat, onion and garlic — and onion and garlic powder are in an astonishing range of sauces, crisps, soups and ready meals, usually listed simply as 'seasoning' or 'flavouring'. Inulin and chicory root, added to boost fibre, are pure fructan.
Then there are polyols — sorbitol, mannitol, xylitol and maltitol — used in sugar-free gum, sweets and 'diet' products, which are poorly absorbed and notorious for triggering symptoms. Excess fructose (from high-fructose corn syrup, honey and concentrated fruit juices) and galacto-oligosaccharides (from legumes) round out the usual suspects.
The 'healthy' products that backfire
Some of the worst offenders are marketed as good for you. High-protein and high-fibre bars frequently use inulin, chicory root fibre or polyols, so a 'gut-friendly' snack can be exactly what sets you off. Sugar-free mints and 'no added sugar' drinks lean on polyols for the same reason.
PickEat reads past the marketing and looks at the actual ingredients, flagging the high-FODMAP additions so a quick scan tells you whether a product is likely to sit well — without you needing to memorise the entire FODMAP list.
Portion size and the FODMAP-stacking trap
FODMAPs are dose-dependent, which leads to one of the most confusing parts of IBS: a food that's fine in a small serving can trigger you in a larger one. A few squares of dark chocolate may be tolerable; half a bar isn't. The ingredient hasn't changed — the amount has.
Stacking makes it trickier still. Several 'low' FODMAP foods eaten in the same meal can add up to a 'high' total, so a sandwich, a yoghurt and a piece of fruit that are each fine alone can combine into a bad afternoon. This is why symptom-tracking by ingredient alone so often fails.
PickEat helps by making the FODMAP load of each packaged product visible before you buy, so you can space out and balance the higher-FODMAP items across your day rather than unknowingly piling them into one meal.
IBS triggers PickEat flags
- ✕High-FODMAP additions: inulin, chicory root, fructo-oligosaccharides
- ✕Onion and garlic powder hidden in seasonings
- ✕Polyols: sorbitol, mannitol, xylitol, maltitol
- ✕High-fructose corn syrup and concentrated fruit juices
- ✕Excess caffeine and certain artificial sweeteners
Usually low-FODMAP
- ✓Plain rice, oats, potatoes and firm tofu
- ✓Lactose-free dairy
- ✓Low-FODMAP certified products
How PickEat helps with IBS
- 1Set your profile to IBS and add any FODMAP groups you personally react to.
- 2Scan the barcode or photograph the ingredients in the shop.
- 3PickEat flags high-FODMAP additions — inulin, onion/garlic powder, polyols — and gives you a clear read.
- 4Build a wider list of foods that work for you, instead of sticking to the same safe few.
Frequently asked questions
Can an app help me find low-FODMAP foods?+
PickEat scans a product's ingredients and flags common high-FODMAP additions such as inulin, onion/garlic powder and polyol sweeteners, helping you avoid likely IBS triggers while you shop.
Does PickEat detect hidden onion and garlic?+
Yes — it catches onion and garlic powder and similar seasonings that are common, easily-missed IBS triggers.
Why do 'healthy' high-fibre snacks trigger my IBS?+
Many high-fibre and high-protein bars add inulin, chicory root fibre or polyols — all high-FODMAP. PickEat flags these so a snack marketed as gut-friendly doesn't catch you out.
Is PickEat a substitute for the low-FODMAP diet?+
No — it's a tool to make the low-FODMAP approach easier in the shop. The full elimination-and-reintroduction protocol is best done with a registered dietitian.
Is it free?+
Yes, scanning is free on iOS and Android.
Sources & further reading
We check our content against guidance from recognised health and nutrition organisations.
Medical note: PickEat is a shopping aid, not medical advice. Information on this page is general and may not reflect your individual needs. Always follow the guidance of a qualified healthcare professional, especially for severe allergies or active disease.