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Skratch LabsExercise Hydration Mix
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Item # SLB0001

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  • Matcha/Lemons "Caffeine", One Size ($13.65)
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Item # SLB0001

Silence. That's all Dr. Allen Lim heard when he knew he had arrived at a solution. No longer were his Garmin riders complaining of the headaches and bloated stomachs that had plagued them for so long. Lim had spent countless hours mixing formulas in buckets to create not a product, but a solution that was informally dubbed Secret Drink Mix, or SDM. Why a secret? Because word had spread through the peloton that Lim had perfected a hydration solution that was effective and delicious, and it led to many pros pouring out the electrolyte-heavy, overly sweetened beverages provided by their sponsors and replacing it with Lim's contraband. Fortunately for us, the secret is out, and Lim is offering this pro-developed and battle-tested solution to the world. It's now called the Exercise Hydration Mix, from Lim's Boulder, Colorado-based Skratch Labs.

Unlike many sports drinks, which are formulated around electrolyte or caloric replenishment during physical exertion, the Exercise Mix focuses on keeping your body's sodium levels carefully regulated. Lim discovered that the rampant headaches plaguing his pro riders were not induced by a lack of fluids, but rather, a lack of sodium -- a very typical symptom of dehydration. Essentially, your kidneys regulate fluid retention based on the body's concentration of sodium. When sodium concentration is high, your body is forced to hold on to that fluid to dilute it. But when your sodium levels get too low (ie: through sweat loss), the opposite happens and your kidneys must expel that fluid. 

Lim's mix is designed to keep your body's sodium balance carefully regulated, maintaining hydration while also slowing diuresis. With diuresis slowed, you'll be able to pre-hydrate and drink more before a race without needing to make those three inopportune bathroom breaks right before your call-up. If these concepts around a sodium-based formula sound familiar, that's because they are -- Lim's drink mix contains nearly four times the amount of sodium in many convenience-store sports drinks, putting it on par with emergency-grade rehydration salt formulas like Pedialyte, and those used by the World Health Organization to combat severe dehydration.

The athletes that helped Lim develop the Exercise Mix weren't just complaining of headaches. They were also suffering from severe stomach bloating and flavor fatigue. The second half of Lim's solution was to ensure his drink was easy and pleasurable to consume day in and day out. To accomplish this, every ingredient from the Exercise Mix is naturally occurring or naturally sourced from real fruit, which ensures you're not putting anything in your body that's been chemically formulated or enhanced. In short, if it wasn't here on this earth before you were, Dr. Lim and his team refused to use it. 

The ingredients are: sucrose, glucose, sodium citrate, potassium citrate, calcium citrate, magnesium citrate, freeze dried fruit, citric acid (a natural preservation agent from pure lime juice), and ascorbic acid. Notice the pronounced absence of the 'natural flavors' found in so many other sports drinks. Part of what makes the Exercise Mix so uniquely palatable even during prolonged periods of exercise and constant re-hydration is the lack of a savoring agent. Generally, chemically-derived flavoring agents like those ominous 'natural flavors' tend to remain on your palate, causing flavor fatigue, and in larger doses, wreak havoc on your gut. 

The Exercise Mix uses real lemons, limes, oranges, and raspberries, which are freeze-dried and pounded into powder. This creates a refreshing, super-clean flavor that's easy on your stomach without a lingering aftertaste that wears out its welcome halfway into your race. It means you're not just getting a 'flavor' of lemon or orange, you're getting actual lemons and oranges in the mix. This is one of the many fundamental breakthroughs behind the Skratch Labs drink mixes. Whether you're staying hydrated during a 24-hour endurance race, or re-hydrating after a grueling criterium, they simply taste great.

Lim and his team created two drink mixes, optimizing each for different levels of physical exertion. This Exercise Hydration Mix has a slightly higher salt content, making it Skratch Labs' on-bike mix, best used for periods when your heart rate is up and you're sweating. Because this mix has a supremely high absorption rate and is not a natural diuretic, it's excellent as a preventative measure against dehydration while you ride, when you stop at an aid station, or immediately after your workout or race, because you can drink a larger volume of it at a time without painful bloating. This is due in part to the drink's exceptionally low levels of acidity, and lack of chemically-enhanced flavors.

The Skratch Labs Exercise Hydration Mix is available in Lemon Lime, Orange, or Raspberry. Each one-pound package should provide approximately twenty (23 grams dry), 500ml servings.

  • A hydration mix with the power of nutrition science behind it
  • High sodium content gives your depleted body what it needs
  • No artificial junk or filler makes it easier on the belly
  • Subtle, all-natural flavors go down gently during hard efforts
  • Formulate for exercise specifically—try another hydration mix for daily hydration
Tech Specs
Tech Specs
sucrose, sodium citrate, glucose, potassium citrate, magnesium citrate, freeze dried lemons & limes, ascorbic acid
Recommended Use
stayin' hydrated

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Works; Great Taste

  • Familiarity: I've put it through the wringer

It works at least as well as other standard hydration mixes. Perfect taste for me, with just a hint of sweetness. And a little shot of caffeinated ambition after my the end of a long ride helps with that last climb. Scratch says you’ll retain more hydration, due to their sodium formulation. This is demonstrated by needing fewer “natural breaks”, i.e. needing to stop for a pee. And it’s true.

Rather drink non-filtered creek water

  • Familiarity: I've put it through the wringer

This review is specific to the matcha green tea & lemon flavor. No wonder it's on sale - nobody wants to buy it. When it's ice cold the taste is OK. I just got back from a run across the Grand Canyon and at one point all I had to drink with me was 16 ounces of this stuff. The taste was God awful. I could not even swish it around in my mouth and spit it out. I should have had plenty of fluid to get me back to Phantom Ranch but I couldn't drink this stuff at all. Forced with no other choice, I decided to pour this out and fill up my water bottle up with unfiltered creek water.

Hey William,
Sorry to hear the matcha was not a match for you. We would be happy to give you a bag of a new flavor to try or refund you. Just shoot us an email at or call 1.800.735.8904.

Yeah, a good old-fashioned case of giardia beats an icky taste anytime. Give me a break.

Avg. ride time: 4h 45m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

What is the difference between the EXERCISE hydration mix and the SPORT hydration mix?

Hi! Almost the same but the exercise hydration is the old version of the sport hydration. To make it more effective, we've added 10% more sodium to better match what's lost in sweat, resulting in almost double the key electrolytes per liter than leading traditional sports drinks.

I'm a Fan!

  • Familiarity: I've used it several times

I've never used hydration supplements before, and after reading so many great reviews on Skratch Labs i wanted to give them a shot.

I have to say, I'm impressed! The biggest thing I notice when drinking this during climbing or other workouts, is that I don't get pumped as quickly and my muscles don't cramp/fatigue as fast either. I like drinking this during exercise and also throughout the day if I'm feeling particularly dehydrated.

The flavor is alright, but the benefits far outweigh it in my opinion. Definitely try this out!

Hi Ana!
Good to hear the mix has been helping in your adventures! Feel free to shoot us an email at and we can sort you out with a flavor you like better. Thanks!

Avg. ride time: 1h 25m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Caffeine Without The Coffee Feel. Wha??

    The SKRATCH LABS Exercise Hydration Mix blew my mind as I was so used to my caffeine coming with a catch of dehydration (see review title). Now that it doesn't the amount in the mix ramps may energy up in the right way without the crash. The matcha and lemons taste takes some time to get used to without having matcha before but the mix is good enough to where it doesn't overwhelm you. If life + bike leaves you always haggard, give this a shot.

    Magic Powder

    • Familiarity: I've put it through the wringer

    I don't know what they put in this stuff but it will make you feel like a million bucks after a long day outside. The caffeine provides a nice boost to ensure you finish the rest of your day strong.

    I use this for everything

    • Familiarity: I've put it through the wringer

    Biking, Hiking, working out etc.. I fill up my water bottle and add a scoop for just about every activity I'm doing. I go with the lemon-lime flavor since I don't like it to be too strong.

    must have!

    • Familiarity: I've put it through the wringer

    The Passionfruit flavor is my all time fave and I find myself always re-stocking up on this stuff to stay hydrated during my hot summer bike rides! Much better than sugary sports drinks that arent really even good for you!

    must have!

    • Familiarity: I've put it through the wringer

    The Passionfruit flavor is my all time fave and I find myself always re-stocking up on this stuff to stay hydrated during my hot summer bike rides! Much better than sugary sports drinks that arent really even good for you!

    Avg. ride time: 1h 55m per week
    • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

    Matcha Is the Best

      This is the best drink mix out there. Light flavoring and easy on the stomach. I love the Matcha flavor and the added kick of caffeine.

      Avg. ride time: 5h 59m per week
      • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.


        Skratch Labs Exercise Hydration Mix (particularly in lemon lime) has become a staple for cyclists around the world. It tastes good, rehydrates, refuels, and provides electrolytes. It's my go-to for training and racing.


          This stuff doesn't get your mouth as sticky as many other drink mixes. It does just a little so I always chase it with water. I also like the mix ratios. Some other mixes want you to use more scoops per 8 oz of water but this one allows you to maximize your purchase. Skratch will be my go to for hydration mix.

          Natural Energy

            Great subtle taste! Keeps me going, whether I'm exploring the outdoors or studying!

            Best Hydration Mix

            • Familiarity: I've put it through the wringer

            Incredible taste, quality/simple ingredients. Cane sugar, sodium, potassium and magnesium. This stuff will keep you going all day!

            Go to Hydration

              Skratch tastes great and keeps you hydrated. Every ride i do, i take a waterbottle of skratch to get me through to the end. The little bit of sugar is perfect to keep the body energized on nice long climbs.

              Best drink mix

              • Familiarity: I've used it several times

              This is so far the best drink mix I've had which isn't saying much because I'm not the biggest fan of them but I can drink this one and not hate it so that a plus.

              Love It, It Works

              • Familiarity: I've put it through the wringer

              Use it on all my long rides. Also no more caffeine headaches since I don't drink coffee before I ride.