Maltodextrin: The Invisible Additive in Almost Everything
Maltodextrin is in thousands of products but rarely discussed. Learn what it is, why it's problematic, and how to spot it on labels.
If you start reading ingredient labels, one name will appear with striking frequency: maltodextrin. It's in protein powders, sauces, salad dressings, chips, candy, canned soups, spice blends, infant formula, and even medications. It's one of the most common food additives in the world — yet most people have never heard of it.
What Is Maltodextrin?
Maltodextrin is a white powder made from starch — usually corn, rice, potato, or wheat. The starch is chemically or enzymatically broken down into shorter chains of glucose molecules. It's technically classified as a carbohydrate, not a sugar, which allows it to fly under the radar on nutrition labels.
Food manufacturers use it as a thickener, filler, preservative, and texture enhancer. It's cheap, has a neutral taste, and dissolves easily — making it the perfect invisible additive.
The Blood Sugar Problem
Despite being classified as a complex carbohydrate, maltodextrin has a glycemic index of 85-105 — higher than table sugar (GI 65) and nearly as high as pure glucose (GI 100). This means it spikes blood sugar faster than eating a spoonful of sugar.
For diabetics, pre-diabetics, or anyone monitoring blood sugar, maltodextrin is particularly dangerous because it's hidden in products that don't seem sweet — savory sauces, spice mixes, "sugar-free" products, and supplements.
Gut Microbiome Effects
Research published in PLOS ONE demonstrated that maltodextrin promotes the adhesion of harmful E. coli bacteria to intestinal cells and enhances biofilm formation — making pathogenic bacteria harder for the immune system to clear. It also suppresses the gut's natural antimicrobial defenses.
A separate study found that maltodextrin alters gut mucus composition and may contribute to the development of inflammatory bowel conditions in susceptible individuals.
Where It Hides
Maltodextrin appears in an astonishing range of products:
- Protein powders and pre-workout supplements
- Artificial sweetener packets (it's the bulking agent in Splenda)
- Salad dressings and condiments
- Canned soups and instant noodles
- Spice blends and seasoning packets
- Infant formula
- Sugar-free and "diet" products
- Medications and vitamin supplements
Because it's derived from starch and doesn't taste sweet, consumers rarely question its presence. But its effects on blood sugar and gut health make it an additive worth tracking.
CleanLabel flags maltodextrin wherever it appears and considers it in the overall toxicity assessment of a product — especially important for users with diabetes-related dietary profiles.