What is highly branched cyclic dextrin?

Highly branched cyclic dextrin (Cluster Dextrin®) is a modern, advanced carbohydrate source derived from amylopectin, a component of starch. A special enzymatic process converts amylopectin into a cyclic, highly branched structure. The result is a highly soluble, stomach-friendly, fast-acting carbohydrate that is ideal for athletes and active people.

Compared with conventional carbohydrates such as maltodextrin, dextrose, or waxy maize starch, highly branched cyclic dextrin has a particularly stable molecular structure, resulting in a steady and efficient energy supply without stomach discomfort, bloating, or sudden blood sugar spikes.

How does highly branched cyclic dextrin work in the body?

1. Fast yet steady energy supply:
Thanks to its low osmolality (low particle concentration in the solution), highly branched cyclic dextrin passes from the stomach into the small intestine particularly quickly. This makes energy available rapidly, while glucose is absorbed steadily, ensuring stable blood sugar levels.

Unlike simple sugars, Cluster Dextrin® does not cause a sudden energy crash and provides consistent energy over a longer period.

2. Improved endurance performance:
Studies show that highly branched cyclic dextrin improves endurance and performance during longer training sessions by ensuring a continuous supply of glucose to the muscles. This helps preserve glycogen stores and delay fatigue.

3. Gentle on the stomach and highly digestible:
Cluster Dextrin® is known for its exceptional stomach tolerance. Even at high concentrations (over 10%) in a drink, it does not cause feelings of fullness, bloating, or stomach cramps. This makes it ideal for intra-workout drinks and intense training sessions.

4. Faster recovery:
After training, highly branched cyclic dextrin helps rapidly replenish glycogen stores, especially when combined with amino acids or proteins. This shortens recovery time and optimally prepares your muscles for the next workout.

5. Optimal nutrient absorption:
Thanks to its steady energy release, Cluster Dextrin® supports the absorption of other nutrients (e.g., BCAAs, electrolytes, creatine) when consumed together in a workout drink.

Benefits of highly branched cyclic dextrin

  • A rapidly available yet long-lasting energy source

  • Very well tolerated – no stomach discomfort or bloating

  • Stable blood sugar levels without an energy crash

  • Improved endurance and training performance

  • Faster recovery through efficient glycogen replenishment

  • Ideal addition to intra- and post-workout drinks

  • Supports the absorption of nutrients from other supplements

Comparison with other carbohydrate sources

Carbohydrate source Absorption rate Tolerance Effect on blood sugar Ideal for
Dextrose very fast medium high Post-workout
Maltodextrin fast good high Post-workout
Waxy maize starch slow moderate low Long-duration endurance
Highly branched cyclic dextrin balanced, consistent very high stable Intra-/post-workout

Recommended use and dosage

  • Before training: 15–25 g (to prepare and provide energy)

  • During training: 25–40 g (as an intra-workout drink for consistent energy)

  • After training: 30–50 g (for rapid recovery, ideally combined with protein or EAAs)

Cluster Dextrin® can be mixed with water, fruit juice, or other sports nutrition ingredients.

Possible side effects

Highly branched cyclic dextrin is considered very safe and well tolerated. No negative side effects are known, even at higher doses. Only with extremely high intake (>100 g at once) may mild bloating or a feeling of fullness occur.

Conclusion

Highly branched cyclic dextrin (Cluster Dextrin®) is one of the most advanced carbohydrate sources in sports nutrition. It combines rapid availability with a steady release of energy, is extremely gentle on the stomach, and is ideal for intense training phases. Whether for endurance, strength, or team sports, Cluster Dextrin® delivers energy exactly when the body needs it, while also supporting recovery, performance, and endurance.

Sources

  1. Takii H, et al. (2005): The influence of highly branched cyclic dextrin on endurance performance in athletes. J Nutr Sci Vitaminol (Tokyo), 51(2), 135–138.

  2. Furuyashiki T, et al. (2014): The effects of highly branched cyclic dextrin on gastric emptying and energy supply during exercise. J Int Soc Sports Nutr, 11(1), 36.

  3. Ivy JL, et al. (2002): Carbohydrate supplementation and endurance performance. Sports Med, 32(7), 404–414.

  4. Jeukendrup AE. (2011): Nutrition for endurance sports: Marathon, triathlon, and road cycling. J Sports Sci, 29(S1), S91–S99.