| Calories per gram | ~0.4 kcal |
| Glycemic Index | ~0 |
| Sweetness vs Sugar | 70% |
| FDA Status | GRAS (Generally Recognized as Safe) |
| Safe serving threshold | ~0.4 g/kg body weight |
| Absorption rate | 70β90% (excreted unchanged) |
Key Takeaways
- Allulose provides ~0.4 kcal/g vs 4 kcal/g for regular sugar
- Negligible effect on blood glucose or insulin levels
- FDA-approved; excluded from total/added sugar labels in the US
- Naturally found in figs, raisins, and wheat in small amounts
- Well-tolerated in moderate amounts; excess may cause GI discomfort
What Is Allulose?
Allulose (also called D-psicose) is a rare monosaccharide classified as a low-calorie sugar. It tastes and behaves almost identically to table sugar but is metabolized very differently β approximately 70β90% is absorbed in the small intestine and excreted unchanged in urine, meaning it contributes virtually no calories and does not raise blood glucose.
Glycemic Impact for Diabetics
Multiple clinical studies confirm allulose has a glycemic index (GI) near zero. In trials involving people with type 2 diabetes, allulose consumption did not significantly elevate postprandial blood glucose or insulin. Some research even suggests it may modestly reduce post-meal glucose spikes when consumed alongside carbohydrates β a meaningful benefit for day-to-day glucose management.
Nutritional Comparison
| Sweetener | Calories/g | Glycemic Index | Insulin Response |
|---|---|---|---|
| Table Sugar | 4.0 | 65 | High |
| Allulose | 0.4 | ~0 | Minimal |
| Erythritol | 0.2 | 0 | None |
| Stevia | 0 | 0 | None |
Health Benefits Beyond Glucose Control
Weight Management
Because allulose contributes negligible calories despite its sugar-like bulk and sweetness, it supports caloric reduction β a key factor in managing insulin resistance and type 2 diabetes.
Potential Anti-Diabetic Properties
Animal and early human studies suggest allulose may inhibit alpha-glucosidase (an enzyme that digests carbs), reduce fat accumulation, and improve insulin sensitivity. While promising, more large-scale human trials are needed.
Dental Safety
Unlike sucrose, allulose is non-cariogenic β it does not feed the bacteria responsible for tooth decay, an added benefit for overall health.
Safety Profile
Allulose has Generally Recognized as Safe (GRAS) status from the FDA. The most commonly reported side effect is gastrointestinal discomfort (bloating, loose stools) at high doses β generally above 0.4 g/kg body weight per sitting. For a 70 kg adult, this threshold is approximately 28 g per serving. Consumed in typical dietary amounts, it is well-tolerated by most individuals including those with diabetes.
How to Use Allulose in a Diabetic Diet
- Baking: Substitutes 1:1 for sugar; browns faster, so reduce oven temperature slightly
- Hot beverages: Dissolves well in coffee and tea
- Smoothies & yogurt: Adds sweetness without glycemic load
- Ice cream & frozen desserts: Lowers freezing point for a creamier texture
MDS Diabetes offers a curated selection of allulose-based products and diabetic-friendly sweetener bundles at mdsdiabetes.com, designed to fit seamlessly into low-glycemic meal plans.
Regulatory Status
In the United States, the FDA ruled in 2019 that allulose may be excluded from total and added sugars on Nutrition Facts labels β a landmark decision reflecting its unique metabolic profile. It remains under review in some international markets including the EU.