Allulose bakes like sugar; erythritol is cheaper and EU-approved. Calories, blood sugar, digestion, the 2023 heart study, and label names compared.
9/11/2026 · 10 min read · Chris Carrillo · Reviewed by Armin Rad, Co-Founder & CTO, Aurascan · Last reviewed 9/11/2026
Editorial accountability
Written by Chris Carrillo. Reviewed by Armin Rad, Co-Founder & CTO, Aurascan. It cites 5 sources; use the source list and methodology to check the evidence directly.
Walk through a crawlable sample result, including what comes from the label, what needs evidence, and what the scanner cannot conclude.
View the sample resultIf you want a sweetener that browns, caramelizes, and behaves like real sugar in baked goods without a minty cooling sensation, choose allulose; if you need a widely accessible, low-cost option approved worldwide for everyday cold drinks and keto treats, choose erythritol.
Choosing between allulose and erythritol comes down to what you are making and where you live. For culinary performance, allulose is the superior sugar substitute. It dissolves easily, creates soft textures in baked goods, and undergoes caramelization just like table sugar. It also avoids the telltale minty cooling sensation that characterizes many sugar alcohol products.
However, erythritol remains the global champion for availability and price. Because allulose is not authorized as a novel food in jurisdictions like the European Union as of 2026, erythritol is often the only option on grocery shelves outside the United States and a few other countries. If you are baking cakes, cookies, or making caramel in the US, allulose wins on taste and texture. For everyday sweetening of tea, coffee, or pre-packaged keto snacks worldwide, erythritol remains a practical staple.
| Feature | Allulose (D-Psicose) | Erythritol (E968) |
|---|---|---|
| Sweetener Classification | Rare sugar (monosaccharide) | Sugar alcohol (polyol) |
| Sweetness Level | ~70% of table sugar | ~70% of table sugar |
| Caloric Density | ~0.4 kcal/g | ~0.2 kcal/g (0 kcal/g on US labels) |
| Glycemic Index | 0 (does not spike glucose or insulin) | 0 (does not spike glucose or insulin) |
| Baking Performance | Browns, caramelizes, retains moisture | Does not brown; crystallizes; cooling sensation |
| Digestive Tolerance | High (absorbed in small intestine, excreted in urine) | High for a polyol (excreted in urine; laxative threshold ~0.5 g/kg) |
| US FDA Label Status | Included in Total Carbs; excluded from Added Sugars | Listed under Sugar Alcohol or Total Carbs |
| EU EFSA Status | Not authorized (novel food application pending) | Authorized as E968 (EFSA ADI set at 0.5 g/kg body weight) |
| Cost Tier | Premium / higher cost | Moderate / budget-friendly |
Allulose, chemically identified as D-psicose, is classified as a rare sugar. It exists naturally in tiny quantities in foods like figs, raisins, jackfruit, and maple syrup. For commercial use, food manufacturers produce allulose by using specialized enzymes to convert fructose from corn or other starches into D-psicose. Because its chemical structure mirrors fructose, it possesses the physical bulk and mouthfeel of real sugar without delivering the same metabolic payload.
Erythritol is a four-carbon sugar alcohol (polyol). It occurs naturally in small amounts in grapes, melons, mushrooms, and fermented products like soy sauce and wine. Commercial erythritol is produced through the fermentation of glucose using specialized yeast strains such as Moniliella pollinis. Unlike classic carbohydrates, polyols have a unique hybrid structure of sugar and alcohol molecules, which shapes how the human digestive tract processes them.
To understand how these ingredients compare to other common bulk sweeteners and thickeners, you can read our breakdown on whether is maltodextrin bad for you? blood sugar, gluten, and labels to see how simple carbohydrates differ from non-nutritive substitutes.
Neither allulose nor erythritol triggers an increase in blood glucose or insulin levels, making both popular among individuals with type 2 diabetes or those adhering to ketogenic diets. However, their metabolic journeys through the body are distinct.
When you consume allulose, approximately 70% to 84% is absorbed in the small intestine directly into the bloodstream. Because human cells lack the specific enzymes required to metabolize D-psicose, the compound travels through the body intact and is excreted unaltered in the urine within 24 to 48 hours. The remainder passes into the large intestine with minimal fermentation. According to FDA industry guidance on allulose labeling, the agency assigns allulose an energy value of 0.4 calories per gram, which is negligible compared to the 4.0 kcal/g found in standard sucrose.
Erythritol follows a similar route. About 90% of ingested erythritol is rapidly absorbed in the upper gastrointestinal tract and eliminated through the kidneys without being broken down into energy. It provides roughly 0.2 calories per gram. Clinical feeding studies confirm that single doses of erythritol produce zero measurable glycemic or insulinemic response. For a deeper look at alternative polyols, explore our guide on xylitol vs erythritol: which sugar alcohol is better for you?.
In the kitchen, allulose performs almost identically to real sucrose. Because it contains an active carbonyl group, allulose participates directly in the Maillard reaction, meaning it browns at high temperatures, creates golden crusts on baked goods, and can be melted down to make caramel and sauces. It also acts as a humectant, holding moisture in muffins, cakes, and chewy cookies so they do not dry out over time.
Erythritol behaves differently in recipes:
Because allulose is roughly 70% as sweet as sugar, recipes often combine it with high-potency sweeteners like stevia or monk fruit to achieve a 1:1 sweetness replacement for sugar without altering the texture. You can see how other non-sugar options handle sweetening in our review on stevia vs monk fruit: which sweetener is better for you?.
Older sugar alcohols like sorbitol and maltitol are infamous for causing abdominal cramping, gas, and osmotic diarrhea because they travel unabsorbed straight into the colon, where gut bacteria ferment them into gas. Both allulose and erythritol provide substantially better gastrointestinal tolerance than those traditional polyols.
Because erythritol is largely absorbed before it reaches the large intestine, it generally causes fewer digestive disturbances than other polyols. However, high acute intakes can still trigger laxative effects. In their detailed safety summary, the EFSA re-evaluation of erythritol established an Acceptable Daily Intake (ADI) of 0.5 grams per kilogram of body weight per day to safeguard against diarrhea and gastric distress.
Allulose demonstrates an even gentler digestive profile for most individuals. Human tolerance studies suggest that allulose can be consumed in single doses up to 0.4 grams per kilogram of body weight without notable gastrointestinal discomfort. However, consuming very large amounts of either sweetener in a single sitting can overwhelm intestinal absorption and lead to mild bloating or loose stools.
Sensitive populations, such as individuals diagnosed with irritable bowel syndrome (IBS), small intestinal bacterial overgrowth (SIBO), or general gut hypersensitivity, may experience lower tolerance thresholds for both sweeteners. Even modest amounts of polyols or non-metabolized sugars can trigger visceral hypersensitivity, bloating, or altered bowel habits in people with sensitive digestive tracts.
Both sweeteners have undergone extensive toxicological reviews, but recent scientific developments have sparked fresh discussion around erythritol. A major 2023 investigation published in Nature Medicine reported that people with higher blood erythritol levels had a greater risk of heart attack and stroke over three years of follow-up. Mechanistic experiments in the study indicated that erythritol could enhance platelet reactivity and potential clot formation in laboratory models. A helpful NIH research summary on erythritol highlighted that further research is needed to determine whether dietary erythritol directly causes these vascular events.
It is essential to view these findings with scientific nuance. Follow-up reviews noted that human bodies naturally synthesize small amounts of erythritol endogenously through the pentose phosphate pathway, especially under conditions of oxidative stress or metabolic dysfunction. Thus, high blood concentrations may reflect underlying metabolic illness rather than dietary intake alone. Nonetheless, the research has led health authorities to study erythritol more closely. You can review our detailed analysis in is erythritol safe? heart concerns and side effects.
Allulose has not shown similar platelet-activating associations in published cardiovascular models. Instead, early human trials indicate that allulose may modestly improve postprandial glucose regulation when consumed alongside carbohydrate-rich meals. For broader context on sweetener safety frameworks, compare this with our evaluations on what is sucralose? uses, safety, baking risks, and labels and what is aspartame? uses, safety, and labeling explained.
From a regulatory standpoint, the US FDA has evaluated multiple Generally Recognized as Safe (GRAS) notifications for allulose and permits its use across numerous food categories. Crucially, as detailed in the FDA draft guidance update on allulose, allulose must be listed under Total Carbohydrates on US Nutrition Facts labels, but it is explicitly excluded from Total Sugars and Added Sugars lines because it is not metabolized like standard carbohydrates. Conversely, in the European Union, allulose remains unauthorized as a novel food, while erythritol is fully authorized across Europe under food additive code E968.
When reading packaged food labels in North America and international markets, these ingredients appear under a few specific designations:
To decide which sweetener fits your daily routine, consider these common practical scenarios:
Scientific Limitations: Current nutritional research cannot establish a definitive causal link between dietary erythritol consumption and adverse cardiovascular events in healthy populations. Individual microbiome composition, background dietary patterns, and underlying cardiovascular status can significantly alter personal tolerance. Long-term prospective human feeding trials examining chronic, multi-year intake of both sweeteners remain limited.
Yes. Allulose browns, caramelizes, and retains moisture much like real sucrose, whereas erythritol does not brown, tends to recrystallize when cooled, and produces an endothermic cooling effect on the tongue.
Allulose is not strictly banned for toxicity reasons; rather, it is classified as a novel food in the European Union and the United Kingdom. It requires formal safety dossiers and regulatory approval from authorities like EFSA before food companies can legally sell it.
Neither sweetener causes a spike in blood glucose or insulin. Both pass through the human body largely unabsorbed or unmetabolized and are excreted primarily through the kidneys in urine.
Both allulose and erythritol offer better digestive tolerance than older sugar alcohols like maltitol or sorbitol. However, allulose is often considered slightly gentler at moderate doses because it does not undergo significant colonic fermentation.
Under US FDA rules finalized in 2020, allulose is included in Total Carbohydrates but excluded from the Total Sugars and Added Sugars lines. Erythritol is listed under Total Carbohydrates and typically declared on the specific Sugar Alcohol line.
Aurascan turns product labels into plain-English ingredient explanations and source-backed context.
Scan your next label with AurascanWhat changed on food labels this week — bans, recalls, and new guides.
Source labels distinguish peer-reviewed research, regulatory material, and Aurascan label data when that classification is available.
Xylitol vs erythritol on calories, blood sugar, dental benefits, digestive tolerance, the 2023-2026 heart studies, dog toxicity and label names.
Aspartame vs sucralose compared: sweetness, heat stability, PKU warning, FDA and EFSA daily limits, the 2023 IARC classification, gut evidence, and which to use where.
Understand what high fructose corn syrup is, how HFCS-42 and HFCS-55 compare to table sugar, health impacts on the liver, FDA regulations, and label aliases.
