FLYCARB's Lactate Shuttle Is Cleared for Launch
Jack Gray
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Lactate Shuttle is here. Our high-carbohydrate lactate drink has been developed in line with the latest research on exogenous lactate, and it's ready for lift-off.
It comes with serving recommendations tailored to your body weight. You can adjust your lactate intake to suit you, rather than relying on the fixed amount in a gel.
Why “Shuttle”?
The name comes from the lactate shuttle concept: lactate isn't a waste product, it's fuel that moves between tissues and gets used. You've probably spent years associating lactate with tired legs, but it's actually an important fuel source your body can use to keep working.
What's that buzz?
Exogenous lactate has been the talk of the peloton this summer, with several WorldTour teams reportedly testing lactate gels at the Tour de France. FLYCARB's lactate shuttle is designed for your bottle, much easier on a bike!
How exogenous lactate works
“Exogenous” simply means supplied from outside the body.
Lactate Shuttle uses calcium lactate. Once absorbed, lactate can be used by muscles for aerobic energy production, or converted into glucose by the liver. By using calcium lactate we have decoupled a sodium strategy from your lactate intake.
The idea behind lactate is to provide an additional, readily usable fuel for working muscles alongside carbohydrate, potentially helping to meet the high energy demands of intense exercise. Think of carbohydrate as your booster rockets and lactate as the second stage. It's built for longer efforts, where even a maximal carb strategy will see your glycogen stores run down.
What the research says
Lactate's role as a fuel is well established. Taking it in through a drink or supplement can supply exogenous lactate, which the body can absorb and use for energy.
A 2024 study tested calcium lactate in 16 trained male cyclists during prolonged cycling with repeated hard efforts. Compared with placebo, the cyclists reported lower perceived exertion and had higher blood bicarbonate levels.
It's an exciting and fast-moving area, and the evidence is still developing. For the science behind our approach, read our Black Paper.
What's in the pouch
We've combined calcium lactate with carbohydrate in a juicy lemon drink. Each 600g pouch contains 24 × 25g scoops. Each scoop provides:
- 🥄 3g calcium lactate
- ✅ 22g carbohydrate
The scoop is a single unit, and the recommended serving varies with your body weight.
Ready for lift-off?
Add Lactate Shuttle to your long-distance fuelling and see how it works for you.