Is Cornflakes Low FODMAP?
Cornflakes are moderate FODMAP — portion-dependent. Corn itself is fine, but most commercial cornflakes contain barley malt extract (fructans), and Monash rates only a small bowl of about half a cup as a low FODMAP serve.
AI-assisted classification — 90% confidence
MODERATE
Mixed
Not listed
Not listed
Cornflakes is portion-dependent.
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Digestive Profile
- Fiber Type
- Mixed Fiber (soluble + insoluble)
- Common Irritants
- None detected
- Allergen Warnings
- None detected
Nutrition Facts (per 100g)
- Calories
- 378 kcal
- Protein
- 7.5g
- Carbohydrates
- 84.3g
- Fat
- 0.4g
- Fiber
- 3.3g
- Sugar
- 8.0g
Why is Cornflakes moderate FODMAP?
Two things push cornflakes beyond plain corn: barley malt flavouring, which adds wheat-family fructans to almost every major brand, and serving size — cereal bowls in practice are two to three times the tested serve. Monash lists cornflakes as low FODMAP at 30 g (about half a cup) with larger serves reaching moderate fructan levels. Milk on top adds lactose unless it is lactose-free.
Serving guidance for Cornflakes
Stick to about half a cup (30 g) of cornflakes with lactose-free or plant-based low FODMAP milk during elimination. If you want a bigger breakfast bowl, plain rice puffs, gluten-free cornflakes (no malt), or rolled oats (1/2 cup dry) give you more volume within low FODMAP limits.
Disclaimer: This nutrition information is for educational purposes only and should not be used to diagnose or treat eating disorders, metabolic conditions, or nutritional deficiencies. Consult a registered dietitian or medical professional before starting any new diet plan. See our Medical Disclaimer.
FODMAP classifications on this page follow the framework established by the Monash University FODMAP research program, which laboratory-tests foods for fermentable carbohydrates. Individual tolerance varies.
Disclaimer: For informational purposes only. Not medical advice. Learn more.
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Frequently Asked Questions
Are cornflakes low FODMAP?
Only at a small serve — about 30 g (half a cup) per Monash testing. Bigger bowls reach moderate fructan levels, mainly from barley malt extract in the recipe.
Can I eat cornflakes if I have IBS?
A half-cup serve with lactose-free milk fits the elimination phase. If breakfast cereal reliably triggers you, test whether it is the volume, the malt, or the milk — each is a separate variable.
Why do cornflakes contain FODMAPs if corn is low FODMAP?
Barley malt extract, used for flavour in most brands, brings fructans with it. Gluten-free cornflakes skip the malt and are the safer choice for bigger portions.
What breakfast cereals are low FODMAP?
Rolled oats (1/2 cup dry), rice puffs, plain quinoa flakes, and certified gluten-free cornflakes are the reliable options. Avoid bran cereals, muesli with dried fruit, and anything with honey or inulin.
Does the milk matter as much as the cereal?
Often more. A cup of regular milk carries a full lactose load. Lactose-free milk, almond milk, or macadamia milk keep the bowl low FODMAP.
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GutGraph is an informational health tracking tool and is not a medical device, medical authority, or substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with any questions about your health. This product is not intended to diagnose, treat, cure, or prevent any disease. See our Medical Disclaimer for more details.