Skratch Labs Super Fuel Drink Mix 840 grams

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For years, Skratch has preached fueling athletes with real food, like our famous rice cakes and delicious Anytime Energy Bars.

Why? Because traditional fueling gels and high-calorie carbohydrate drinks are too concentrated or use carbohydrate sources that digest too fast for athletes to tolerate, causing gastrointestinal distress.

But we know athletes can’t always make, carry, or eat real food. They want convenience and calories in a bottle that won’t make them sick. To that end, our founder, Dr. Allen Lim, developed a solution with a formula using Cluster Dextrin - an extraordinarily complex carbohydrate that is highly soluble but digests steadily like real food.

Cluster Dextrin is an amylopectin starch with highly branched segments that connect back to one another to form a cyclic shape similar to muscle glycogen. This similarity is a result of applying Branching Enzyme (the same enzyme responsible for glycogenesis) to waxy corn starch to make a highly branched cyclic dextrin (1). The net result is a carbohydrate that is
extraordinarily soluble but still slow to digest (2). Much of this is explained by Cluster Dextrin’s large size. A single molecule contains between 60 to 70 glucose units, at an average molecular weight of 10,548 grams per mole, with a Dextrose Equivalent of 1.7 (3). In contrast, a long chain amylose starch like maltodextrin, which is the most common form of carbohydrate in gels and
high-calorie drinks, only contains between 3 to 20 glucose units, at an average molecular weight of 2,000 grams per mole, with a Dextrose Equivalent of 8-10 (3).

Cluster Dextrin’s properties enabled us to make Superfuel – a drink mix with a viscosity close to water, that is energy dense, and steadily digested. It’s designed for athletes who push so hard that they can’t take in enough calories from real food to maintain their performance.

One 500 ml serving provides 100 g of carbohydrate (92 grams from Cluster Dextrin + 8 grams from fructose) and 400 mg of sodium from sodium citrate, providing 400 Kcals at an osmolality of 150 mOsmol/kg (3). This is significantly lower than blood (280-290 mOsmol/kg), helping to maximize water transport by both osmosis and sodium-glucose co-transport. Given this extremely low osmolality, Superfuel is an extremely flexible fuel and hydration source which can be used at lower or higher concentrations depending on the workload and caloric need.

While there is existing literature showcasing incredible performance gains with Cluster Dextrin in both humans (4) and animals (5) as well as literature showing alleviation of gastro-intestinal distress (6), we wanted to prove it to ourselves before making Superfuel available to the public.

To that end, we worked for nearly two years with some of the world’s greatest athletes, including Olympic Gold Medalist Triathlete, Gwen Jorgensen, and the EF Education First Pro Cycling Team to prove that the science matched real world practice. The consensus from these athletes is that Superfuel is the best liquid carbohydrate source available.