Polyol sweetener · Polyol (well absorbed) · E968
Is erythritol low FODMAP?
The short answer
Mostly yes. Erythritol (E968) is a sugar alcohol, but unlike sorbitol or xylitol the body absorbs around 90% of it in the small intestine and excretes it unchanged, so little reaches the colon to ferment. Monash rates it low FODMAP at moderate servings — making it the best-tolerated polyol for most sensitive guts.
What erythritol is
Erythritol is a polyol (sugar alcohol) about 70% as sweet as sugar, with almost no calories. It's produced by fermenting glucose and occurs naturally in small amounts in fruits and fermented foods. It's the sweetener often blended with stevia or monk fruit in "natural" zero-sugar products.
Why it’s in your food
Erythritol gives a clean, sugar-like sweetness with essentially no calories and no blood-sugar impact, and it doesn't have the strong laxative reputation of other polyols — so manufacturers use it as the bulk sweetener in keto, diabetic, and "natural" zero-sugar foods, frequently paired with high-intensity sweeteners to round out the taste.
The science, in plain language
Here's the key difference: erythritol is a small molecule that's absorbed efficiently in the small intestine and passed out in urine largely unchanged. Because so little reaches the colon, there's far less osmotic water movement and fermentation than with sorbitol, mannitol, or xylitol. That's why, despite being a polyol, it tests low FODMAP at moderate servings. The honest caveat: very large amounts can still cause nausea or a laxative effect in some people, and tolerance is individual.
What it feels like
For most people, none at typical servings — which is what sets erythritol apart from other polyols. At high doses (well above what's in a normal portion) some people report nausea or loose stools. If you're highly sensitive, treat any polyol with a little caution and test your own threshold.
What to look for on the label
The same ingredient shows up under several names. On an ingredient list, watch for:
Commonly hides in
- •Keto and low-carb sweeteners and treats
- •Stevia and monk fruit "natural" sweetener blends
- •Sugar-free chocolate and baking products
- •Zero-sugar sodas and drinks
- •"No added sugar" ice cream and desserts
Better-tolerated alternatives
Erythritol is itself the better-tolerated alternative — it's usually the polyol to switch to when sorbitol or xylitol upset you. If you want to avoid sugar alcohols entirely, glucose-based sweeteners (table sugar, maple syrup, rice malt syrup) are low FODMAP in modest amounts. Worth knowing: some 2023 research raised questions about erythritol and cardiovascular markers such as platelet clotting; that evidence is early and debated, and regulators consider erythritol safe — flagging it so you can make an informed choice, not as a reason for alarm.
The bottom line
The exception among polyols: low FODMAP at moderate servings and generally the gentlest sugar alcohol for sensitive guts. Enjoy in normal amounts; go easy on very large doses.
Frequently asked questions
Is erythritol low FODMAP?
Yes, at moderate servings. Although erythritol is a polyol, around 90% of it is absorbed in the small intestine and excreted unchanged, so little reaches the colon to ferment. Monash University rates it low FODMAP at typical serving sizes, which makes it the best-tolerated sugar alcohol for most people with IBS.
Why is erythritol tolerated better than sorbitol or xylitol?
It comes down to absorption. Sorbitol, mannitol, and xylitol are poorly absorbed, so they reach the colon and cause osmotic water shifts and fermentation. Erythritol is a smaller molecule that's mostly absorbed and passed out in urine, so much less reaches the gut bacteria — meaning far less gas, bloating, and laxative effect.
Can erythritol still cause symptoms?
For most people, not at normal servings. But very large amounts can cause nausea or loose stools in some individuals, and tolerance varies. If you're highly sensitive, introduce it gradually and find your own comfortable amount rather than assuming unlimited quantities are fine.
Related hidden FODMAPs
This page is for informational purposes only and is not medical advice. Erythritol is safe for the general population; the FODMAP concerns described here apply to people with IBS or FODMAP sensitivity, and tolerance is individual. FODMAP classifications reflect Monash University testing and the published FODMAP literature. Always work with your doctor or a registered dietitian on dietary changes.