Sweeteners/Sugar alcohols (polyols)

Sorbitol

Also known as: Glucitol

ModerateSugar alcohols (polyols)E420

Sugar alcohol from corn glucose. Half as sweet as sugar, frequent cause of laxative effects.

52
SweetSpot score
Sweetness vs sugar
60%
Glycemic index
9
low
Calories
2.6 kcal/g
Verdict
Moderate

At a glance

6 of 10 metrics graded

How Sorbitol compares to table sugar on the three numbers most people actually want.

Sweetness vs sugar
60%
vs sugar
Less sweet
Glycemic index
9
vs sugar 65
Lower than sucrose
Calories per gram
2.6 kcal
vs sugar 4 kcal
35% less than sugar
SweetSpot score
52/100
AvoidPoorModerateGoodExcellent

Ten-metric breakdown

See methodology →
  • Taste quality
    Weight 20%
    60
  • Glycemic impact
    Weight 18%
    70
  • Naturalness
    Weight 10%
    60
  • Tooth friendliness
    Weight 8%
    80
  • Overall safety
    Weight 14%
    Pending
  • Digestive comfort
    Weight 8%
    30
  • Gut microbiome
    Weight 8%
    Pending
  • Aftertaste
    Weight 6%
    Pending
  • Sustainability
    Weight 4%
    Pending
  • Allergen safety
    Weight 4%
    85

Source: public.sweeteners snapshot, refreshed 2026-04-27. "Pending" cells are catalogued but not yet graded by SweetSpot research.

What it actually is

Sorbitol is a polyol made by hydrogenating glucose. It occurs naturally in stone fruits and apples. Sweetness sits at ~60% of sucrose with a low glycemic load.

Its main practical issue is digestive: sorbitol is poorly absorbed in the small intestine, ferments rapidly in the colon and pulls water in osmotically. EU labelling rules require a warning above 10% concentration. People with IBS often react at much lower doses.

Useful where you want humectancy (it holds moisture) and low glycemic effect — sugar-free hard candies, pharmaceutical syrups, some toothpastes — but not a great everyday tabletop sweetener.

What it does well
  • Low GI (~9)
  • Humectant — keeps food moist
  • Tooth-friendly
Where it falls short
  • Reliable laxative above ~20 g/day
  • Frequent IBS trigger
  • Only 60% the sweetness of sugar

Regulatory status

FDA (United States)
GRAS
EFSA (Europe)
Authorised E420
Acceptable daily intake
Not specified; >20 g/day reliably laxative

In practice

Best for
  • Sugar-free candies, pharmaceutical syrups, toothpaste
Avoid if
  • IBS
  • Sensitive gut
  • Tabletop use at high volume
Where you'll find it

Sugar-free gum, cough syrups, diabetic candies

The evidence

Selected peer-reviewed sources behind the score. Open access where possible. Read our scoring methodology for how we weight evidence tiers.