Do Raisins Trigger IBS?
Yes. Raisins are high FODMAP due to concentrated fructose from the drying process. A single tablespoon (13g) is borderline low FODMAP, but typical snacking portions far exceed this threshold. Most people with IBS should avoid raisins or limit them to very small amounts mixed into other foods.
What Makes Raisin Problematic for IBS
Drying grapes into raisins concentrates the fructose content dramatically. A small handful of raisins delivers the same fructose load as a large bunch of grapes, overwhelming the gut's ability to absorb it.
How it works
Excess fructose in raisins is poorly absorbed in the small intestine. It passes to the colon where gut bacteria rapidly ferment it, producing hydrogen and methane gas that causes bloating, cramping, and diarrhea.
Common Symptoms
Raisins commonly cause bloating and gas within 2-6 hours of eating. The concentrated fructose draws water into the intestine, which can also trigger diarrhea and urgency in sensitive individuals.
Portion Thresholds
Safe Portion
1 tablespoon (13g) — very small amount
Research Reference
Monash University: 1 tablespoon (13g) is low FODMAP. Larger servings become high FODMAP.
Practical Tip
A typical snack-size box of raisins is about 43g — more than 3x the safe portion. If you enjoy raisins, measure carefully.
How Raisin Compares
Side-by-side FODMAP breakdowns for the swaps people most often weigh against Raisin.
Related Foods
It depends on the amount. Small portions of grapes (up to about 6 grapes) are low-FODMAP and tolerated by most people with IBS. However, larger servings become moderate to high in excess fructose, which can trigger bloating, gas, and abdominal discomfort. Portion control is important.
Yes. Cherries are high-FODMAP due to their significant sorbitol and fructose content. Even a small handful (3-4 cherries) can trigger bloating, gas, and diarrhea in people with IBS. Both sweet and sour cherries are high in sorbitol. Dried cherries and cherry juice are even more concentrated. Choose strawberries or blueberries instead.
It depends on portion and brand. Pure unsweetened cranberry juice is low-FODMAP at 150ml (about ⅔ cup). But most commercial cranberry juice is sweetened with apple juice, grape juice, or high-fructose corn syrup — turning it into a top IBS trigger. Read labels carefully.
It depends on how many. Monash rates blueberries low-FODMAP at 1/4 cup (40g) — about 20 berries — and that is a smaller serving than most people realise. A handful scattered on porridge is roughly the limit; a full cup in a smoothie bowl is several times it. Blueberries are genuinely one of the better fruits on a low-FODMAP diet, but they are a portion-controlled food rather than a free one.
Frequently Asked Questions
Are raisins low FODMAP?
Only in very small amounts. One tablespoon (13g) is low FODMAP, but typical servings are much larger. Most IBS sufferers should treat raisins as high FODMAP.
Why are raisins worse than grapes for IBS?
Drying concentrates the fructose. You end up eating far more fructose per bite with raisins than with fresh grapes, making them a stronger IBS trigger.
Can I eat raisins in baked goods?
Small amounts mixed into a large recipe may be tolerable since the per-serving amount is diluted. However, raisin-heavy items like raisin bread or trail mix are best avoided.
Sources & References
FODMAP grade and serving-size data for Raisin are based on published research from Monash University, the institution that developed the low-FODMAP diet. To understand how this data fits into a structured protocol, see our complete elimination diet guide.
- Monash University — About FODMAPs & IBS
- Monash University — Starting the Low-FODMAP Diet
- Halmos et al. (2014) — Low-FODMAP diet reduces IBS symptoms (Gastroenterology)
- NIDDK (NIH) — Irritable Bowel Syndrome
FODMAP thresholds are updated as new research is published. If you notice a portion that no longer matches the latest Monash guidance, let us know and we will update the page.
Stop guessing about Raisin. Find all your triggers.
Answer 6 quick questions and get a personalized plan for your symptoms. It takes 2 minutes and tells you exactly where to start.
Free. Not a medical diagnosis.