Erythritol is a low-calorie sugar alcohol used widely in "keto" and sugar-free products. It is FDA-recognized as safe and has almost no effect on blood sugar — but research published in 2023 raised questions about a possible link to cardiovascular events, and that question is still being studied.
Erythritol is a sugar alcohol — a class of carbohydrate, also called a polyol, that occurs naturally in small amounts in some fruits and fermented foods. Commercially, it is produced by fermenting a sugar source, usually glucose from corn, with yeast. It looks and pours much like granulated sugar and is about 60–70% as sweet.
Like other sugar alcohols, erythritol is not a sugar and does not behave like one in cooking — it does not brown or caramelize, and it can give a cooling sensation on the tongue. It is valued in sugar-free and low-carbohydrate products mainly because it adds bulk and sweetness with very few calories.
Erythritol is unusual among sugar alcohols. Most of it is absorbed in the small intestine and then excreted largely unchanged in urine, rather than being fermented in the large intestine. Because of this, it contributes only about 0.2 calories per gram — lower than most other sugar alcohols — and tends to cause less of the digestive discomfort that polyols are known for, though large amounts can still cause it.
Because it is barely metabolized for energy, erythritol has a near-zero glycemic index — it does not meaningfully raise blood glucose or insulin. The US Food and Drug Administration recognizes erythritol as Generally Recognized as Safe (GRAS), and the European Food Safety Authority has also assessed it as safe for use as a food additive.
This is the question most people come to erythritol with, because of news coverage in 2023. The honest answer has two parts.
Erythritol is FDA-recognized as safe (GRAS) and is permitted for use in the US, the EU and many other countries.
For ordinary use as a sweetener, regulators have not restricted erythritol. Its long-standing safety record is mainly about digestive tolerance, where it performs better than most sugar alcohols.
A 2023 study linked higher blood levels of erythritol with a higher rate of cardiovascular events — but it showed an association, not proof that erythritol causes them.
In 2023, researchers led by a team at the Cleveland Clinic published work, in the journal Nature Medicine, reporting that people with higher blood erythritol levels had more heart attacks and strokes over the following years, and that erythritol appeared to make blood platelets more prone to clotting in laboratory tests. The findings drew wide news coverage.
Later studies extended the 2023 work: a controlled dose made platelets more reactive, and a laboratory study reported effects on brain-blood-vessel cells — still mechanism and association, not proof of harm.
In 2024, a follow-up reported that a single 30-gram dose of erythritol made blood platelets significantly more reactive in volunteers, while an equivalent glucose dose did not (Arteriosclerosis, Thrombosis, and Vascular Biology). A separate 2024 analysis applied the same approach to xylitol and found a comparable signal. In 2025, a laboratory study reported that erythritol applied to human brain-blood-vessel cells raised oxidative stress and blunted their production of t-PA, a substance that helps dissolve clots (Journal of Applied Physiology). These build a consistent mechanistic picture, but the platelet and cell findings are short-term and laboratory work — they show a plausible pathway, not that ordinary erythritol intake causes cardiovascular events in people.
The 2023 work is a serious finding worth taking seriously — and it is also widely misunderstood. A few points matter for reading it accurately. The observational part of the study found an association: people with more erythritol in their blood had more events. It did not establish that consuming erythritol caused them — the body also makes erythritol on its own, so high blood levels can be a marker of something else.
The clotting effects were seen partly in laboratory and short-term settings, not in long-term human trials. And the question is now being studied further. The accurate summary is: this is an open scientific question, not a settled verdict. A cautious reader may reasonably choose to moderate erythritol while the research develops; a reader should not conclude either that it is proven dangerous or that the question has been dismissed.
Erythritol is not only sold on its own. Because high-intensity sweeteners are too concentrated to measure by spoon, erythritol is the most common bulking agent in retail stevia and monk fruit products — frequently the first ingredient by weight. So a shopper choosing a "natural" sweetener to avoid artificial ones is often consuming mostly erythritol. This is an ingredient-label point worth knowing, not a claim about any one brand.
US federal guidance now advises limiting non-nutritive sweeteners generally, and California has named erythritol in school-food legislation.
The 2025–2030 Dietary Guidelines for Americans advise that "no amount of added sugars or non-nutritive sweeteners is recommended or considered part of a healthy or nutritious diet." Separately, California's 2025 Real Food, Healthy Kids Act (AB 1264) names erythritol among the substances that mark a food as "ultraprocessed" for the purpose of phasing such foods out of K-12 schools between 2029 and 2035. Neither action is a consumer ban, but both reflect a regulatory direction of caution toward this category.
Both are low in calories and low-glycemic, and the two are often considered as alternatives. They differ in what they are and what they can do.
| Property | Erythritol | Allulose |
|---|---|---|
| Type of ingredient | Sugar alcohol (polyol) | Rare sugar (monosaccharide) |
| Is it a sugar? | No | Yes |
| Calories per gram | ~0.2 | ~0.4 |
| Glycemic index | Near zero | Zero |
| Browns & caramelizes | No | Yes |
| Taste notes | Cooling sensation | Clean, sugar-like |
| Open safety questions | 2023 cardiovascular research, ongoing | No comparable cardiovascular question raised |
| Named in California AB 1264 | Yes | No |
| US regulatory status | GRAS | GRAS |
Allulose is a sugar and behaves like one in cooking — it browns and caramelizes, which erythritol cannot. Allulose has also not been the subject of the cardiovascular question raised about erythritol in 2023, and it is not among the sweeteners named in California's AB 1264. For a reader weighing the two, those are the substantive distinctions.
Research published in 2023 found an association between higher blood erythritol levels and cardiovascular events, and laboratory signs of increased clotting; 2024–2025 follow-up studies reported more platelet reactivity after a dose and effects on brain-blood-vessel cells in the lab. Together these build a mechanism, but it has not been established that consuming erythritol causes heart problems — the human evidence is associational. Some people choose to moderate erythritol while the science develops.
No. Erythritol has a near-zero glycemic index and does not meaningfully raise blood glucose or insulin, because it is barely metabolized for energy.
Erythritol is recognized by the FDA as Generally Recognized as Safe (GRAS) and is permitted for use as a sweetener in the US.
Erythritol absorbs heat as it dissolves, producing a mild cooling sensation. Some people find this pleasant; others notice it as an off-note, especially in larger amounts.
Erythritol provides bulk but does not brown or caramelize like sugar, and it can crystallize. It is often blended with other sweeteners for baking rather than used alone.
See how erythritol and the other sweeteners line up on calories, glycemic impact and baking behavior — all 21 side by side.
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