Skratch Labs Super High-Carb Sport Drink Mix vs Tailwind Nutrition High Carb Endurance Fuel
·By Croix
Educational, not medical advice. Recipes and dosages are starting points — individual tolerance varies. Consult a healthcare professional or registered dietitian before changing your nutrition strategy. Full disclaimer.
At a glance
| Skratch Labs Super High-Carb Sport Drink Mix | Tailwind Nutrition High Carb Endurance Fuel | |
|---|---|---|
| Carbs per serving | 100 g | 90 g |
| Glucose : Fructose | 12:1 | 2:1 |
| Sodium per serving | 400 mg | 660 mg |
| Calories | 400 kcal | 360 kcal |
| Format | Powder | Powder |
| Carb sources | Cluster Dextrin, Fructose | Dextrose, Maltodextrin, Fructose |
| Retail price per serving | $5.24 | $2.75 |
| Cost per gram of carb (retail) | ~$0.052/g | ~$0.031/g |
| DIY cost per serving | ~$3.94 | ~$1.05 |
| DIY savings vs retail | ~25% | ~62% |
What is this comparison about?
Skratch Super High-Carb and Tailwind High Carb Endurance Fuel are the two most prominent 90–100 g/serving products marketed at the elite end of carbohydrate fueling — the 100+ g/hr targets pro cyclists and Ironman athletes are now hitting in the post-Pogačar / post-Iden era.
The two products take completely different formulation approaches. Skratch leans hard on Cluster Dextrin (HBCD) — a branched cyclic glucose polymer with extraordinarily low osmolality — paired with a small fructose dose at a 12:1 glucose-to-fructose ratio. Tailwind High Carb uses the more conventional dextrose + maltodextrin + fructose blend at a 2:1 ratio with full electrolytes.
What do they have in common?
- Targeted at 90–100+ g/hr carbohydrate intake
- Powder format, dissolves in water
- Both designed to be palatable at high carb concentrations (where ordinary dextrose-heavy drinks become GI-risky)
- Both substantially cheaper to replicate at home in bulk ingredients
Where do they differ?
| Trait | Skratch Labs Super High-Carb Sport Drink Mix | Tailwind Nutrition High Carb Endurance Fuel |
|---|---|---|
| Carb per serving | 100 g (the highest commonly available single-serving) | 90 g |
| Glucose-to-fructose ratio | 12:1 — heavily glucose-dominant; bets that HBCD's osmolality advantage outweighs the dual-transporter argument | 2:1 — within the dual-transporter framework, just at the older O'Brien & Rowlands optimum |
| Carb sources | Cluster Dextrin (HBCD) + fructose. HBCD is ~7× the price per gram of maltodextrin. | Dextrose + maltodextrin + fructose. All commodity ingredients. |
| Sodium per serving | ~400 mg | ~660 mg |
| Osmolality strategy | Bypass the gastric-emptying bottleneck via HBCD's ultra-low osmolality (~9 mOsm per 10 g/100 ml). Allows drink concentrations up to ~12% without gastric shutdown. | Stay within the conventional 6–8% concentration window, accept the standard gastric-emptying behavior, lean on the dextrose for fast bioavailability. |
| Retail price per serving | ~$5.24 (the price of HBCD) | ~$2.75 (the price of bulk commodity sugars) |
| Independent evidence | HBCD's osmolality advantage is well-documented in dose-response trials. Whether that translates into a measurable performance benefit over a matched-dose conventional drink at typical fueling rates is less settled. | The 2:1 ratio is the most-tested formulation in the entire literature. Predictable behavior at moderate-to-high intakes. |
Which one should I actually buy?
Verdict: Tie — depends on use case
If you're targeting 100+ g/hr in race conditions and have GI'd out on conventional sugar drinks before, Skratch's HBCD design is the more defensible chemistry — the osmolality advantage at very high concentrations is real and measurable. The $5.24 per serving is the cost of buying HBCD at retail.
If you're targeting 60–90 g/hr in training or in events where conventional drinks already work for you, Tailwind High Carb at $2.75 per serving is the better deal. The 2:1 ratio is well-tested, the electrolyte dose is generous, and you don't gain meaningful absorption advantage from HBCD at intake rates that aren't already pushing the gastric ceiling.
Both replicate in a kitchen at a meaningful discount. The DIY teardown for Skratch Super High-Carb shows what bulk HBCD costs you at home (~$1.50/serving, vs. $5.24 retail) — that's a 70% saving, with the same chemistry. Tailwind High Carb is cheaper still in a kitchen.
Pick Skratch Labs Super High-Carb Sport Drink Mixif…
- You're targeting 100+ g/hr in long, high-effort events (Ironman, multi-hour gravel, ultrarunning).
- You've had GI distress on conventional 8%+ concentration drinks at high intakes.
- You're race-day-prioritizing tolerability over per-gram cost and want the lowest-osmolality option available.
Pick Tailwind Nutrition High Carb Endurance Fuelif…
- You're targeting 60–90 g/hr — the dual-transporter sweet spot for the 2:1 ratio.
- You want a single-bottle coupled drink with robust electrolytes for hot or salty conditions.
- You want a lower per-serving cost without going to a kitchen-mixed solution.
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Or skip both and DIY
Skratch's premium comes from HBCD costing roughly 7× per gram what maltodextrin costs. Even buying HBCD in bulk at home, a Skratch-style 100 g drink lands around $1.50/serving (vs $5.24 retail) — a 70% saving. Tailwind High Carb is even cheaper to mix at home: under 50 cents per serving in dextrose + maltodextrin + fructose + salt.
The ingredients involved
- Cluster Dextrin (HBCD) · An ultra-low-osmolality glucose polymer engineered for the highest carb intakes — premium price, real (but situational) benefit.
- Maltodextrin · The glucose-polymer workhorse in almost every high-carb sports drink — same energy as dextrose, far lower osmolality, nearly tasteless.
- Fructose · The GLUT5-transported sugar that lets you push past the 60 g/hr glucose ceiling — pair with maltodextrin at ~1:0.8 for the modern dual-transporter formula.
- Table Salt (Sodium Chloride) · The cheapest, most-bioavailable sodium source in your kitchen — pennies per gram and chemically identical to what's in any electrolyte tab.
- Sodium Citrate · A smoother-tasting sodium source than table salt — the alkalising buffer commercial drinks use to dose sodium without the bite.