Diabetes-Specific Oral Nutritional Supplement Containing Allulose Improves Postprandial Glucose Response in Prediabetes

Prediabetes is not a niche condition. One in three American adults has it. Yet most oral nutritional supplements are built around rapidly digested carbs. That mismatch matters. If you formulate for this population, you need to understand how a small ingredient change can alter postprandial glucose.

Why standard ONS fails prediabetes

Standard oral nutritional supplements are designed for weight maintenance and recovery. They deliver calories. That often means maltodextrin, sucrose, and other fast-acting carbohydrates. For a prediabetic patient, those carbs spike blood glucose quickly. Over time, repeated spikes accelerate beta-cell decline. The very product meant to support nutrition can work against metabolic control.

Diabetes-specific nutritional formulas exist. They typically use slower carbohydrates, added fiber, and adjusted fat profiles. But not all are equal. Some still lack targeted ingredients that directly blunt glucose absorption.

What the study did

Researchers compared a diabetes-specific oral nutritional supplement (DSNF) to a standard ONS. The DSNF contained 3 g of allulose per 200 mL. The standard ONS contained none. The DSNF also delivered lower available carbohydrates overall.

The outcome measure was postprandial glucose iAUC—the area under the glucose curve after ingestion. This captures both the height and duration of the glucose excursion. It is a practical marker for everyday management.

Key findings

The difference was dramatic. DSNF produced an iAUC of 1,683.49. Standard ONS produced 4,455.92. That is nearly three times lower. The difference was statistically significant at P < 0.0001. This is not a marginal effect. It is a clinically meaningful gap.

Product	Allulose per 200 mL	Available carbohydrate	Postprandial glucose iAUC
DSNF	3 g	Lower	1,683.49
Standard ONS	0 g	Higher	4,455.92

The authors point to allulose as a key driver. It works through multiple paths. Allulose inhibits glucose absorption in the intestine. It stimulates GLP-1 release. It also promotes hepatic glycogen storage. Together, these actions flatten the postprandial curve.

What it means for manufacturers

This is not a theoretical result. You have a validated approach for improving glycemic response in a diabetes-specific formula. Allulose is a rare sugar. It has a clean label profile and about 90% less metabolizable energy than sucrose. For food formulators, this matters.

First, you can reduce available carbohydrates without sacrificing sweetness. Allulose replaces some bulk sugar or maltodextrin. That alone lowers the glycemic load. Second, allulose is an active ingredient—not just an inert filler. It changes how the body handles the carbohydrates that remain in the formula.

Third, the magnitude of the effect suggests you can differentiate your product. Standard ONS products are commodities. A diabetes-specific ONS with documented postprandial benefit is a clinical tool. That gives you a stronger story for dietitians and physicians who recommend products.

Keep in mind that allulose dosing is not one-size-fits-all. This study used 3 g per serving. You might need to test your own matrix. Protein, fat, fiber, and mineral content can influence digestion rates. But the mechanism is robust. The data supports a meaningful starting point.

Frequently asked questions

How does allulose lower postprandial glucose so effectively? Allulose works at three levels. It slows or reduces intestinal glucose absorption. It triggers GLP-1, which increases insulin sensitivity and slows gastric emptying. And it directs glucose toward liver glycogen storage. Each mechanism is small on its own. Together, they blunt the spike.

Can I use allulose in a non-diabetes product? Yes. The effects on glucose are beneficial for anyone with metabolic concerns. That includes weight management products, sports nutrition, and general health beverages. Many consumers are actively looking for lower-glycemic options.

Will allulose affect taste or texture? Allulose is a bulk sweetener. It provides about 70% of the sweetness of sucrose. It has a clean, sugar-like taste and participates in the Maillard reaction. In liquid oral supplements, it performs well. Just be aware that it adds subtle sweetness, so you may need to adjust high-intensity sweeteners.

The practical path forward

You have a product category that is growing. Prediabetes is widespread. Postprandial glucose is a measurable endpoint that regulators and clinicians understand. And now you have a specific ingredient—allulose—shown to shift the response in a clinically significant way.

The 3 g dose from this study is a viable starting point. Run your own formulation trials. Measure your own iAUC values. The data from this paper gives you a clear benchmark. The next step is your product.