Polyglycitol syrup is a sugar-free sweetener made from starch. It belongs to a family of ingredients called hydrogenated starch hydrolysates, and it’s composed of a blend of sugar alcohols: maltitol, sorbitol, and larger polyol molecules. You’ll find it listed on ingredient labels of sugar-free candies, flavored drinks, frozen desserts, baked goods, and tabletop sweeteners. It provides sweetness and bulk similar to sugar but with fewer calories and a smaller effect on blood sugar.
How Polyglycitol Syrup Is Made
The process starts with starch, most commonly from corn, though barley, cassava, rice, wheat, and tapioca are also used. Starch is essentially a tightly packed chain of glucose molecules. To turn it into polyglycitol syrup, manufacturers first break those chains apart, then chemically modify the resulting sugars.
In the first step, starch is mixed into a water slurry and treated with enzymes that chop the long glucose chains into shorter fragments. This is called hydrolysis. The slurry is heated to around 105°C (221°F) using steam injection, which causes the starch granules to swell and break open. Additional enzymes continue splitting the chains over roughly two hours until the mixture reaches a target level of simple sugars and short-chain fragments.
In the second step, the sugar mixture goes through hydrogenation, a chemical reaction that adds hydrogen atoms to the sugar molecules. This converts them into sugar alcohols (polyols). The result is a thick, sweet syrup containing a mix of sorbitol (from single glucose units), maltitol (from two-unit chains), and higher molecular weight polyols from the longer fragments. The exact ratio depends on how far the starch was broken down before hydrogenation.
Where You’ll Find It
Polyglycitol syrup shows up in five main product categories, based on international food additive standards maintained by the FAO and WHO: flavored milk drinks, edible ices like sherbet and sorbet, confectionery (especially sugar-free hard candies and gummies), bakery products, and tabletop sweeteners. Its syrup form makes it especially useful in products that need a liquid sweetener for texture, moisture retention, or smooth mouthfeel. In candy manufacturing, it helps prevent crystallization in much the same way corn syrup does, but without the sugar content.
Calories and Blood Sugar Effects
Sugar alcohols as a group provide fewer calories than regular sugar. Standard table sugar delivers 4 calories per gram. The sugar alcohols in polyglycitol syrup are only partially absorbed in the small intestine, so your body extracts less energy from them. The exact caloric value varies by composition, but regulatory agencies generally assign sugar alcohols between 1.6 and 3 calories per gram.
Because polyglycitol syrup is poorly absorbed compared to regular sugar, it produces a lower and slower rise in blood glucose. This is why it’s a common ingredient in products marketed to people managing diabetes or watching their carbohydrate intake. On nutrition labels in the United States, the sugar alcohols in polyglycitol syrup are listed separately from total sugars, which helps consumers distinguish them from conventional sweeteners.
Digestive Side Effects
The same incomplete absorption that makes polyglycitol syrup low-calorie also explains its most common side effect: a laxative response. Because a portion of the syrup passes through the small intestine undigested, it reaches the large intestine where it draws water into the bowel and gets fermented by gut bacteria. This can cause gas, bloating, cramping, and loose stools.
The threshold for this laxative effect is generally 30 to 50 grams per day, according to data reviewed by the U.S. Environmental Protection Agency during a safety assessment. That’s roughly the amount you’d get from eating several servings of sugar-free candy in one sitting. Most people tolerate moderate amounts without any issues, and tolerance tends to improve with regular use as gut bacteria adapt. Children and people with irritable bowel syndrome may be more sensitive at lower amounts.
Beyond the digestive effects, safety data is reassuring. Animal studies using high doses over 90-day and 13-week periods found no adverse effects other than the expected intestinal response. The only notable observations in rats fed very high doses were changes in the lower gut related to unabsorbed material accumulating there, which researchers considered a predictable consequence of eating large amounts of any poorly absorbed carbohydrate rather than a sign of toxicity.
How It Compares to Other Sugar Alcohols
If you’ve seen erythritol, xylitol, sorbitol, or maltitol on ingredient labels, polyglycitol syrup is in the same general family. The key difference is that it’s a blend rather than a single compound. Where a product sweetened with pure maltitol contains just one type of sugar alcohol, polyglycitol syrup delivers a spectrum of them in varying chain lengths. This blend can produce a smoother sweetness profile and better texture in finished products.
- Erythritol is almost completely absorbed in the small intestine and excreted in urine, so it causes fewer digestive issues but provides almost no calories.
- Xylitol has a pronounced cooling sensation and is widely used in sugar-free gum. It’s toxic to dogs.
- Sorbitol is one of the components within polyglycitol syrup and is known for having a stronger laxative effect than some other sugar alcohols at equivalent doses.
- Maltitol is another component of polyglycitol syrup and tastes closest to sugar, but it also raises blood glucose more than other sugar alcohols.
Because polyglycitol syrup contains both sorbitol and maltitol along with longer-chain polyols, its overall properties fall somewhere in the middle of these individual sweeteners. It’s less likely to spike blood sugar than pure maltitol, but more likely to cause digestive discomfort than erythritol at the same dose.
Reading It on a Label
Polyglycitol syrup may also appear on ingredient lists as “hydrogenated starch hydrolysate” or “HSH.” Some labels simply list “maltitol syrup” or “sorbitol syrup” depending on which sugar alcohol predominates in the blend. If a product’s nutrition facts panel shows sugar alcohols and the ingredient list includes any of these names, you’re looking at the same general category of sweetener. Products containing polyglycitol syrup sold in the U.S. are required to carry the advisory “Excess consumption may have a laxative effect” on the label.