Stevia vs Erythritol

Stevia and erythritol are the most common pairing in the sugar-free aisle, and often they are the same product: a tub labeled “stevia” is mostly bulking agent by weight, and that bulking agent is commonly erythritol. So the useful question is less “which one?” than “which does what?”. Stevia brings intense sweetness from milligrams of purified leaf compounds. Erythritol brings bulk, a cooling sensation and most of the weight. They also differ sharply in how settled their science is: stevia is the best-characterized sweetener we cover, while erythritol carries a cardiovascular question that is real and still open.

At a Glance

Every row below comes from our two sourced records, the same ones the cards at the foot of this page show. Each figure links to the document it came from and the date we last checked it; open “Note” for the qualifications that go with it. Where a record has nothing sourced for a row, the cell says so rather than filling the gap.

What Each One Does

FDA puts steviol glycosides, the sweet compounds purified from the stevia leaf, at 200 to 400 times sweeter than sugar. The individual glycosides differ in potency, so a product that switches from one to another changes how sweet it is without changing the word “stevia” on the label. Used at milligram levels, they add no volume, structure, browning or mouthfeel.

Erythritol is a sugar alcohol used as a bulk sweetener. Its specification band is 60–80% of sugar’s sweetness, and measured sweetness rises with concentration, so a one-for-one swap by weight under-sweetens. It has the strongest cooling effect of the common sugar alcohols, because it absorbs heat as it dissolves. It does not brown, since sugar alcohols do not take part in the Maillard reaction, and its low solubility means it recrystallizes as foods cool, which is the gritty texture people notice in erythritol-sweetened baked goods and frozen desserts.

Put together, the two cover each other’s gaps: erythritol supplies the bulk and stevia supplies the sweetness erythritol lacks. That is why the combination is everywhere.

Calories, Carbs and Blood Sugar

FDA assigns erythritol 0 kcal/g, the only sugar alcohol with a zero factor, and its glycemic index is 0 (averaged across four studies, with enough scatter that “no detectable effect” is the honest reading). Its grams count in Total Carbohydrate on a US label but not in Total or Added Sugars.

Purified steviol glycosides are not broken down or absorbed in the upper gut; bacteria in the colon cleave them to steviol. At milligram use levels they subtract in full from net carbs. The carrier is another matter. Retail stevia products are bulked with erythritol, dextrose or maltodextrin depending on the brand, and dextrose and maltodextrin are ordinary, rapidly digested carbohydrate. Read the ingredient list.

Stevia has the stronger direct evidence on glucose. A 2024 meta-analysis of 26 trials with 1,439 participants found stevia lowered fasting glucose, most consistently in trials shorter than 120 days and in people with diabetes, higher BMI or hypertension. It found no effect on insulin or HbA1c, and its authors rate the certainty low. Stevia is well evidenced as a way to replace sugar; evidence that it improves metabolic health on its own is not.

Intake Limits

The two limits are not in the same units, and neither is in grams of the product you buy.

Stevia’s acceptable daily intake is 4 mg per kg of body weight a day, expressed as steviol equivalents, not as grams of product. JECFA set it in 2008 and EFSA reached the same figure independently in 2010. In 2024 EFSA refused a request to raise it, and found that a proposed extension into baked goods would push toddlers’ high-end intake (6.9 mg/kg a day at the 95th percentile) further above it.

Erythritol’s limit comes from the gut. EFSA pooled ten human studies with diarrhea thresholds between 0.5 and 1 g per kg of body weight in a single dose, and in 2023 adopted the low end, 0.5 g/kg a day, as erythritol’s first numerical ADI. It found that children’s high intakes already exceed it, and it kept the EU’s laxative warning for foods with more than 10% erythritol. For a 70 kg adult, a single 30 g serving is about 86% of that daily limit.

The Cardiovascular Question

This is where the two part company. Stevia has no comparable open signal in our record. Erythritol does, and it has to be stated plainly. A 2023 study in Nature Medicine linked higher blood erythritol to a higher risk of major adverse cardiac events. The ARIC study of 4,006 older adults free of heart disease linked it to heart-failure hospitalization (HR 1.18), cardiovascular death (HR 1.21) and death from any cause (HR 1.19). Three genetic (Mendelian randomization) studies published in 2025 and 2026 found higher genetically predicted erythritol going with higher odds of stroke or coronary disease.

The caveats are just as real. All of this measures erythritol in the blood, not in the diet, and the body makes erythritol from glucose. In the Nurses’ Health Study the association faded once diabetes was accounted for, while the same-size signal for mannitol and sorbitol, which almost nobody eats in quantity, did not. FDA’s review of the 2023 study noted it did not adjust for kidney function, which also raises blood erythritol. The authors of the 2026 genetic study say their result should not be read as evidence that eating erythritol causes stroke. No regulator has restricted erythritol. It is an unresolved signal that is still moving, not a settled verdict either way.

Regulatory Status

Stevia’s position is the most settled of the two. In the US, high-purity (at least 95%) steviol glycosides are GRAS by notification, but stevia leaf and crude leaf extracts are not GRAS and may not be imported for use as sweeteners (Import Alert 45-06). In the EU, steviol glycosides are authorized as E 960a–d across 32 food categories; the four numbers distinguish leaf extraction, fermentation, enzymatic production and glucosylation.

Erythritol is GRAS by notification in the US, with six FDA “no questions” letters between 2001 and 2026, and is authorized in the EU as E 968, under the group authorization for polyols.

Which Should You Choose

For drinks, stevia on its own does the job with no carbohydrate and no digestive load; choose a liquid or a product whose carrier you have checked. For baking, you need bulk, and erythritol or an erythritol–stevia blend provides it, with the trade-offs above: no browning, a cooling note and a gritty texture once cooled. If you eat erythritol in quantity, keep the 0.5 g/kg daily limit in mind, and if you already have heart disease or strong risk factors, the open research question is reasonable to discuss with a doctor.

The Bottom Line

Stevia is the better-characterized of the two: an ADI two bodies agree on, full EU authorization and a settled US position, though no proven benefit beyond replacing sugar. Erythritol is the one that makes a stevia product usable by the cup, with a zero-calorie, zero-GI profile, a digestive limit lower than most people assume, and a cardiovascular signal that is associated, unexplained and not shown to be caused by diet. When you buy a “stevia” tub, check how much of it is erythritol, because that is most of what you are eating.