What does erythritol mean?
Erythritol is a sugar alcohol — technically a polyol with the formula C4H10O4 — that occurs naturally in small quantities in fruits such as pears and grapes and in fermented foods, and is manufactured commercially by fermenting glucose with yeast. It provides about seventy percent of the sweetness of table sugar with essentially no calories, and unlike most other sugar alcohols it is absorbed into the bloodstream and excreted unchanged in urine, largely bypassing the gut fermentation that causes bloating. This makes it one of the better-tolerated low-calorie sweeteners, though very large intakes can still cause digestive discomfort. It is widely used in sugar-free confectionery, beverages, and keto-friendly products, often blended with high-intensity sweeteners such as stevia to mask their aftertaste. The name derives from the Greek 'erythros', meaning red, reflecting its original isolation from lichen-derived material. For consumers reading ingredient lists, erythritol signals a reduced-sugar formulation.
nounA naturally occurring sugar alcohol (a polyol) used as a low-calorie sweetener, found in some fruits and fermented foods and produced industrially by the fermentation of glucose.
- A four-carbon sugar alcohol (C4H10O4) used as a bulk low-calorie sweetener in food and beverages.
- In chemistry more broadly, any member of this specific tetritol compound class.
"The bakery sweetens its keto-friendly brownies with erythritol instead of sugar."
"Because erythritol contributes almost no calories, it is popular in sugar-free beverages and confectionery."
"Some people notice digestive discomfort after consuming large amounts of erythritol."
Rarely used; 'erythritols' appears mainly in chemistry when referring to multiple distinct molecular species or preparations of the compound.
"Different commercial erythritols can vary slightly in crystal size and purity."
Erythritol is one of the only zero-calorie sweeteners your body doesn't even try to digest — it passes straight through, which is why it tastes like sugar without the metabolic baggage.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of erythritol
Erythritol takes its name from the Greek word 'erythros', meaning red, combined with the chemical suffix '-itol' used for sugar alcohols. It was first isolated in the nineteenth century from lichen-derived sources, where its association with red-coloured material gave rise to the name. The Greek root 'erythros' also underlies a family of scientific terms including 'erythrocyte' (red blood cell) and 'erythema' (redness of the skin).
How erythritol is actually used
Erythritol is primarily encountered on food labels and in nutritional or scientific contexts; it carries no figurative use. It is uncountable in ordinary usage, though chemists may refer to individual molecules. In everyday speech it is usually simply called a 'sweetener' rather than by name.
Easily confused with erythritol
Sucralose is an artificial chlorinated sucrose derivative many times sweeter than sugar, whereas erythritol is a natural sugar alcohol with roughly 70% of sugar's sweetness.
Xylitol is another sugar alcohol but has more calories than erythritol and is highly toxic to dogs, while erythritol is generally considered safer for pets.