Cluster Dextrin vs. Maltodextrin
Mar 09, 2026
Have you heard of Cluster Dextrin? It’s been in the sports nutrition world for a while now and it may just be a game-changer when it comes to using it during your training sessions and competitions.
Let’s get into the differences between cluster dextrin and maltodextrin - the more common carbohydrate used in sports nutrition product.
While both provide energy, they differ significantly in structure, digestion speed, gastrointestinal tolerance and performance application.
Cluster dextrin, often referred to as Highly Branched Cyclic Dextrin (HBCD), is a specially engineered carbohydrate made from amylopectin (a component of starch). Its unique molecular structure forms large, cyclic clusters of glucose molecules. It has a high molecular weight, low osmolality (easier on the stomach), rapid gastric emptying and provides a steady energy release.
Because of its structure, cluster dextrin passes through the stomach quickly while remaining easy to digest, reducing the likelihood of bloating or gastrointestinal distress during exercise.
Maltodextrin is a glucose polymer derived from corn, rice, potato or wheat starch. It consists of short chains of glucose molecules and is widely used in many sports drinks, gels and recovery products. It has a moderate molecular weight, high glycemic response and provides rapid digestion and absorption. It quickly elevates blood glucose levels, making it useful for immediate energy needs. However, in higher concentrations, it may increase the risk of stomach discomfort during prolonged or high-intensity exercise.
Let’s get more into the main differences between cluster dextrin and maltodextrin.
1. Digestive tolerance
- Cluster dextrin’s low osmolality means fluids move through the stomach quickly, making it ideal for endurance athletes who consume carbohydrates continuously during events.
- Maltodextrin works well but can feel “heavy” if concentrations are too high, especially in hot conditions or long-duration efforts.
2. Energy delivery
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Both provide glucose for working muscles. Maltodextrin delivers energy rapidly and is effective for short, intense sessions. Cluster dextrin is often preferred when sustained energy and gut comfort are priorities.
Practically speaking, maltodextrin may be favored in shorter training or competitions (under 90 minutes) while cluster dextrin may be better for training or events longer than 90 minutes. Both of them can be beneficial depending on your needs, digestive challenges and calorie needs. Want more help determining what products to use in your training and racing? Check out our 6-week Optimal Performance Nutrition Program. It will elevate your performance this season!
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