Is dextrose sugar?
Yes. US regulations define corn sugar as the ingredient “commonly called D-glucose or dextrose”, made by fully breaking down corn starch and crystallising the result. Chemically it’s identical to the glucose in your blood.
Because it’s already glucose, it needs no digesting before it’s absorbed. That’s why it raises blood sugar faster than table sugar, and why glucose or dextrose tablets are a standard treatment for low blood sugar.
Why is dextrose added to food?
It’s cheap and versatile. Dextrose balances saltiness in cured meats and seasonings, helps baked goods and crisps brown, feeds the yeast in bread, and bulks out powders and sweetener packets. It’s less sweet than table sugar, so it can be used in larger amounts without making food taste sugary.
Dextrose compared with table sugar
| Property | Dextrose | Table sugar |
|---|---|---|
| Made from | Corn or wheat starch | Sugar cane or sugar beet |
| Molecule | Glucose | Glucose and fructose joined |
| Glycaemic index | 100 (reference) | About 65 |
| Taste | Less sweet | Sweet |
| Counted as added sugar | Yes | Yes |
Where dextrose hides
Foods to check
- Cured meats
- Crisps and seasonings
- Sauces
- Sports products
- Bacon and ham
- Bread
- Sweetener packets
- Energy tablets
Names on the label
- dextrose
- dextrose monohydrate
- dextrose anhydrous
- anhydrous dextrose
More sugars to know
Common questions
Is dextrose the same as glucose?
Yes. Dextrose is the name used for glucose made from starch as a food ingredient. On a label they mean the same sugar.
Is dextrose worse than sugar?
It raises blood sugar faster, because it needs no digesting. Otherwise it counts toward your added-sugar limit just like table sugar does.
Why is there dextrose in meat?
In cured meats like bacon and ham, a little dextrose softens the salty taste, helps browning and supports the curing process. It still counts as added sugar.
Is dextrose natural?
It’s made from a natural starch, but by processing it with acids or enzymes. Where it comes from doesn’t change how your body treats it.
Does dextrose count on a no sugar challenge?
Yes. It’s added sugar, so check labels on savoury foods like crisps, sauces and cured meat, where it’s easy to miss.
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Sources
- U.S. Code of Federal Regulations — 21 CFR 184.1857 Corn sugar (dextrose)
- Atkinson FS, Foster-Powell K, Brand-Miller JC. International tables of glycemic index and glycemic load values: 2008. Diabetes Care
- U.S. Food & Drug Administration — Added sugars on the Nutrition Facts label
- NHS — Low blood sugar (hypoglycaemia)
This guide is for general information and isn’t medical advice.