Sorbitol is a sugar alcohol used in sugar-free candy, gum, and many medicines and toothpastes. It is lower in calories than sugar and low-glycemic — but it is the sugar alcohol most associated with a laxative effect, and products containing it often carry a warning to that effect.
Sorbitol is a sugar alcohol that occurs naturally in some fruits — notably stone fruits like apples, pears and prunes — and is produced commercially from glucose. It is about 60% as sweet as sugar, with the mild cooling taste common to polyols. It also holds moisture well, so beyond sweetening it is used as a humectant in toothpaste, sugar-free baked goods and some cosmetics.
Sorbitol appears widely in sugar-free hard candy and chewing gum, and as an inactive ingredient in many liquid medicines.
Sorbitol is slowly and incompletely absorbed in the small intestine; the portion that is not absorbed is fermented in the large intestine. It contributes about 2.6 calories per gram and has a low glycemic index, so it raises blood glucose considerably less than sugar.
Because a meaningful share is fermented in the gut, sorbitol is well known for causing gas, bloating and a laxative effect, especially at higher amounts — more so than some other sugar alcohols.
Sorbitol has a long record of permitted use; its defining issue is digestive tolerance.
Sorbitol is FDA-recognized for use and permitted in the US, the EU and many other countries.
Sorbitol has been used as a sweetener and humectant for decades and is permitted by the FDA and assessed by the European Food Safety Authority.
Sorbitol has not been the subject of a cancer classification or a major cardiovascular scare. Its well-established drawback is digestive: because of how it is fermented in the gut, larger amounts reliably cause gas, bloating and a laxative effect, and US labels on sorbitol-containing foods commonly carry an "excess consumption may have a laxative effect" notice. This is a documented, dose-related tolerance issue — not a safety alarm. As with the whole category, broader sugar-alcohol research is ongoing.
California's AB 1264 names sorbitol; the Dietary Guidelines advise limiting non-nutritive sweeteners generally.
California's 2025 Real Food, Healthy Kids Act (AB 1264) names D-sorbitol among the substances marking a food as "ultraprocessed" for the K-12 school phase-out between 2029 and 2035. The 2025–2030 Dietary Guidelines advise limiting non-nutritive sweeteners. Neither is a consumer ban. For context, the World Health Organization's 2023 advisory on non-sugar sweeteners does not cover sugar alcohols such as sorbitol — its scope is the high-intensity sweeteners — so sorbitol sits outside that particular advisory, though it remains a caloric polyol named by AB 1264.
| Property | Sorbitol | Allulose |
|---|---|---|
| Type of ingredient | Sugar alcohol (polyol) | Rare sugar (monosaccharide) |
| Is it a sugar? | No | Yes |
| Calories per gram | ~2.6 | ~0.4 |
| Glycemic index | Low | Zero |
| Browns & caramelizes | No | Yes |
| Digestive tolerance | Notable laxative effect | Generally well tolerated in normal use |
| Named in California AB 1264 | Yes | No |
| US regulatory status | FDA-recognized | FDA GRAS |
Sorbitol is a sugar alcohol — useful as a humectant, but higher in calories than allulose, only mildly sweet, and the polyol most likely to cause a laxative effect. Allulose is a real sugar that browns and caramelizes, is much lower in calories, and is not named in California's AB 1264.
Sorbitol is well known for causing gas, bloating and a laxative effect, especially at higher amounts, because a meaningful share is fermented in the gut. US labels on sorbitol-containing foods often carry a laxative-effect notice.
Sorbitol has a low glycemic index and raises blood glucose considerably less than sugar, though more than a near-zero-GI sweetener like allulose.
Sorbitol is FDA-recognized and permitted for use. Its main documented issue is digestive tolerance rather than a safety alarm.
Sorbitol holds moisture well and is not fermented into acid by tooth-decay bacteria, which makes it useful as a humectant and sweetener in toothpaste and as an inactive ingredient in liquid medicines.
See how sorbitol and the other sweeteners line up on calories, glycemic impact and baking behavior — all 21 side by side.
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