Cluster Dextrin changes the math on liquid fueling. This highly branched cyclic dextrin is an amylopectin starch with a molecular structure similar to muscle glycogen, which means it digests gradually and steadily rather than spiking and crashing like simple sugars. Skratch Labs built the Super High-Carb Sport Drink Mix around this carbohydrate, delivering 100 grams of carbs and 400 calories in a single serving that your gut can actually handle during hard efforts. The formula combines Cluster Dextrin with fructose, leveraging dual transport pathways to increase the total carbohydrate your body can absorb per hour.

The osmolality difference matters. Simple sugars pack more molecules into solution, creating higher concentration that slows water absorption and causes GI distress. Cluster Dextrin carries more glucose units per molecule, so you get the same calories with lower osmolality—faster fluid absorption and less stomach trouble even when you're pushing hard. Athletes describe the effect as a continuous drip of constant fuel rather than the surge-and-fade pattern of conventional high-carb drinks.

This mix was designed for situations where eating solid food becomes impractical: ultramarathons, double centuries, stage races, or any effort where you need serious calories without chewing. Seven scoops into 16-20 ounces of water provides the full 400-calorie serving, but you can scale down based on effort and conditions. Cooler days might need more calories with less fluid; hot days might call for splitting fuel across multiple bottles with additional hydration. The 840g bag contains 3200 total calories across 8 full servings, enough to fuel multiple big days or several weeks of hard training.... Read More