Not all electrolyte powders are created equal. Whether you’re a competitive cyclist pushing through mile 80, or someone who just wants to feel more hydrated after a long day in the office, choosing the right hydration product matters more than most people realize.

Two names dominate the conversation: Skratch Labs Hydration Sport Drink Mix and Liquid I.V. Hydration Multiplier. Both are wildly popular, both are well-marketed, and both promise to keep you hydrated—but they’re built for very different people, with very different needs.

Forbes Vetted (updated May 19, 2025) named Skratch Labs the best electrolyte powder for athletes and Liquid I.V. the best-tasting electrolyte powder. That’s a useful starting point. But what do those labels actually mean for you? And which one delivers more value for your money?

This guide breaks it all down—ingredient by ingredient, use case by use case—so you can make a genuinely informed decision.

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What Are Electrolytes, and Why Does Your Body Need Them?

Before diving into the head-to-head, it’s worth understanding what electrolytes actually do.

Electrolytes are minerals that carry an electric charge when dissolved in fluid. They regulate fluid balance, support muscle contractions, facilitate nerve signaling, and maintain your body’s pH levels. When you sweat, you lose electrolytes—primarily sodium, but also potassium, magnesium, and chloride—and if you don’t replace them, performance suffers and dehydration sets in.

Here’s a quick breakdown of the key players:

• Sodium: The most critical electrolyte for hydration. It drives fluid into your cells and helps your body retain water. It also stimulates thirst, encouraging you to drink more. Most experts recommend 200–500 mg per serving for exercise.
• Potassium: Works in tandem with sodium to regulate fluid balance and support muscle function. A deficit can cause cramping and fatigue. Target range: 100–300 mg per serving.
• Magnesium: Supports energy production, muscle recovery, and over 300 enzymatic processes in the body. Target range: 50–100 mg per serving.
• Chloride: Often overlooked but essential—it pairs with sodium to maintain fluid balance and support digestion.

The science is clear: dehydration doesn’t just mean feeling thirsty. Even mild dehydration of 1–2% of body weight can impair cognitive function and reduce physical performance. For athletes, the consequences compound quickly.

When Do You Actually Need Electrolyte Supplementation?

Not everyone needs an electrolyte drink all the time. Here’s a practical breakdown:

You likely need electrolyte supplementation if you:

• Exercise for more than 60–90 minutes, especially in heat
• Sweat heavily during workouts
• Are recovering from illness involving vomiting or diarrhea
• Follow a low-carb or ketogenic diet (which accelerates electrolyte loss)
• Live or work in a hot climate
• Feel persistently fatigued, cramped, or foggy despite adequate water intake

You probably don’t need it if you:

• Engage in light activity for under an hour
• Eat a balanced diet with plenty of fruits, vegetables, and whole foods
• Are already getting adequate sodium, potassium, and magnesium through food

Water is sufficient for casual, short-duration hydration. But the moment you’re sweating heavily or exercising for extended periods, electrolytes become non-negotiable.

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Understanding Oral Rehydration and Osmolality

One concept worth understanding before comparing these products is osmolality—the concentration of solutes (like electrolytes and sugars) in a solution relative to blood plasma. Solutions that closely match blood plasma (~280–300 mOsm/kg) are called isotonic and are absorbed efficiently. Hypotonic solutions (lower concentration) absorb even faster but carry fewer electrolytes. Hypertonic solutions (higher concentration) can actually draw fluid out of cells, slowing rehydration.

Liquid I.V. markets itself using Cellular Transport Technology (CTT), which is based loosely on oral rehydration solution (ORS) science developed by the WHO. ORS uses a specific sodium-to-glucose ratio to activate sodium-glucose co-transport (SGLT1) in the gut, accelerating water absorption. It’s an effective mechanism—one that’s saved lives in clinical settings for decades.

Skratch Labs, on the other hand, is formulated closer to the body’s own fluid concentrations, making it isotonic and easy to absorb without depending on high sugar loads to drive uptake.

Both approaches work. The key difference is in execution—and the tradeoffs that come with each.

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Skratch Labs Hydration Sport Drink Mix: A Closer Look

Skratch Labs was founded by sports scientist and coach Dr. Allen Lim, who originally developed the formula in a field kitchen for professional cyclists. The brand’s entire ethos centers on real food, clean ingredients, and science-backed formulation designed specifically for athletic performance.

Electrolyte Profile

A single serving (22g, one scoop) of Skratch Labs Hydration Sport Drink Mix provides:

• Sodium: ~380 mg
• Potassium: ~45 mg
• Magnesium: ~44 mg
• Calcium: ~44 mg

Sodium sits firmly within the recommended athletic range of 200–500 mg. Potassium is on the lower end of the target range, and magnesium falls just under the 50 mg threshold, though the full electrolyte spectrum is present. The formula was designed to mirror what the body loses in sweat—no more, no less.

Sugar and Carbohydrate Content

One serving contains approximately 19g of carbohydrates and 80 calories. The sweetness comes from cane sugar and dextrose—real, recognizable sugars rather than artificial sweeteners or synthetic substitutes. For endurance athletes, this carbohydrate load is a feature, not a flaw: it provides a rapid energy source during prolonged exercise when glycogen stores are being depleted.

Ingredient Quality

Skratch Labs keeps its ingredient list impressively short. No artificial colors, no artificial flavors, no maltodextrin, no high-fructose corn syrup. Many flavors are gluten-free, and the brand uses real fruit for flavor (e.g., real raspberry, lemon, or orange pieces). This commitment to ingredient transparency is one of the strongest arguments for the product.

Red flags to watch for in electrolyte products (which Skratch Labs avoids):

• Artificial colors (FD&C dyes linked to hyperactivity and allergic reactions)
• Artificial flavors (often vague and poorly regulated)
• Excess sugar or corn syrup
• Maltodextrin (a high-GI filler that spikes blood sugar)
• Excess citric acid (linked to tooth enamel erosion with habitual use)
• Soy or gluten for those with sensitivities

Taste and Mixability

Skratch Labs has earned a reputation for subtle, not-too-sweet flavors. The taste mimics real fruit more than the candy-like sweetness of some competitors. It mixes well in a standard water bottle with a shake, though some fine granules may settle if left undisturbed.

Available flavors include: Raspberry Limeade, Orange, Lemon & Lime, Passion Fruit, Matcha Green Tea & Lemon, and more. The variety is solid without being overwhelming.

Suitability

• Athletes: Excellent. High sodium content, real carbohydrates for energy, and a clean ingredient profile make this a top-tier choice for endurance athletes, cyclists, runners, and team sport players.
• Everyday hydration: Possible, but the calorie and carbohydrate content may be unnecessary for sedentary or lightly active users.
• Keto/low-carb: Not suitable. At 19g of carbs per serving, it would break ketosis.
• Children or those monitoring sugar: Not ideal due to the sugar content, though the sugar is from natural sources.

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Liquid I.V. Hydration Multiplier: A Closer Look

Liquid I.V. is one of the most recognizable names in the hydration space, largely thanks to aggressive social media marketing and an easy-to-carry single-serving packet format. The brand claims its CTT formula hydrates you 2–3x faster than water alone—a bold claim that has driven enormous consumer interest.

Electrolyte Profile

A single serving (one 16g packet) of Liquid I.V. Hydration Multiplier provides:

• Sodium: ~500 mg
• Potassium: ~370 mg
• Magnesium: 0 mg

Sodium and potassium both hit the upper end of the recommended ranges, which is a strong showing. However, the complete absence of magnesium is a notable gap—particularly for athletes, who lose magnesium through sweat and depend on it for muscle recovery and energy production.

Sugar and Carbohydrate Content

One packet contains approximately 11g of carbohydrates and 45 calories, with sugar as the primary carbohydrate source. The sugar-to-sodium ratio is calibrated to activate the SGLT1 co-transport mechanism referenced in ORS science, which does accelerate absorption.

However, the formula also contains stevia, which some users find imparts a slightly bitter aftertaste. Additionally, Liquid I.V. uses pure cane sugar, dextrose, and stevia in combination—a sweeter profile than Skratch Labs.

Ingredient Quality

Liquid I.V. has improved its formulation over the years. It does not contain artificial colors or artificial sweeteners in the traditional sense (stevia is a natural sweetener). However, citric acid is present, which is worth noting for anyone who consumes multiple packets daily—habitual citric acid consumption can affect dental enamel.

The formula also includes B vitamins (B3, B5, B6, B12) and Vitamin C, which can be appealing for general wellness but aren’t strictly necessary for hydration. Some users appreciate the added micronutrient support; others prefer a formula that focuses purely on electrolytes.

Unlike Skratch Labs, Liquid I.V. does not use real fruit for flavoring—artificial flavor compounds are used, which may matter for those with ingredient sensitivities or a preference for cleaner labels.

Taste and Mixability

Liquid I.V. is frequently praised for its taste—rich, sweet, and satisfying. This is arguably its biggest competitive advantage. The brand’s “Lemon Lime” and “Watermelon” flavors have a devoted following. If taste compliance is your primary barrier to staying hydrated, Liquid I.V. wins this round convincingly.

It dissolves quickly and completely in water with minimal shaking, making it highly convenient. The single-serving stick packs are portable and easy to toss in a gym bag, purse, or travel bag.

Available flavors include: Lemon Lime, Watermelon, Passion Fruit, Strawberry, Açaí Berry, Guava, Tropical Punch, and more—a notably broader selection than Skratch Labs.

Suitability

• Everyday hydration: Very well suited. The lower calorie count, convenient packaging, and enjoyable taste make it practical for daily use.
• Recovery from illness: Good option. High sodium and potassium support rehydration after dehydration caused by illness, fever, or travel.
• Athletes: Adequate for moderate exercise, but the lack of magnesium and lower carbohydrate content limit its utility for serious endurance training or long, intense workouts.
• Keto/low-carb: Partial fit. At 11g of carbs per serving, it’s better than Skratch Labs for keto, but still not zero-carb. For strict keto, neither product is ideal—alternatives like Ultima Replenisher or Transparent Labs Hydrate (which contain little to no sugar) are better options.
• Flavor-sensitive users: Stevia’s aftertaste may be off-putting for some.

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Head-to-Head Comparison

Factor	Skratch Labs	Liquid I.V.
Sodium (per serving)	~380 mg	~500 mg
Potassium (per serving)	~45 mg	~370 mg
Magnesium (per serving)	~44 mg	0 mg
Calories (per serving)	~80	~45
Carbohydrates (per serving)	~19g	~11g
Sugar source	Cane sugar, dextrose	Cane sugar, dextrose, stevia
Artificial colors	No	No
Artificial flavors	No	Yes
Real fruit	Yes	No
Keto-friendly	No	No (partially)
Best for athletes	✅ Yes	Moderate
Best for everyday use	Moderate	✅ Yes
Flavor variety	Good	Excellent
Mixability	Good	Excellent
Packaging	Tub or bulk bags	Single-serve stick packs
Price (approx. per serving)	~$1.75–$2.00	~$1.50–$1.75
Forbes Vetted ranking	Best for Athletes	Best Tasting

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Use Case Breakdown

For Endurance Athletes and Intense Training

Winner: Skratch Labs

If you’re running a half marathon, completing a multi-hour cycling ride, or training in hot conditions, Skratch Labs is the clear choice. The higher carbohydrate content provides usable fuel, the sodium level is squarely in the athletic range, and the clean ingredient profile means you’re not consuming anything your body doesn’t need.

The formula was literally developed in a field kitchen for professional cyclists. That heritage matters.

For Casual Workouts Under 90 Minutes

Winner: Liquid I.V.

For shorter sessions, you don’t need the caloric load of Skratch Labs. Liquid I.V.’s lower calorie count, higher palatability, and convenient packaging make it easier to reach for before or after a gym session.

For Everyday Hydration and General Wellness

Winner: Liquid I.V.

The single-serve packets are genuinely convenient. Liquid I.V. is easy to keep in a desk drawer, travel bag, or car console. Its broad flavor range and crowd-pleasing taste make it more likely to be used consistently—and consistency is everything when it comes to hydration habits.

For Recovery from Illness or Travel Dehydration

Winner: Liquid I.V.

The high sodium (500 mg) and potassium (370 mg) combination aligns closely with ORS principles. If you’re recovering from food poisoning, a stomach bug, or a long flight, Liquid I.V. provides a solid, fast-absorbing rehydration option.

For Keto and Low-Carb Diets

Winner: Neither (consider alternatives)

Both products contain carbohydrates that may disrupt strict ketosis. People following a ketogenic or low-carb diet lose electrolytes rapidly—particularly sodium, potassium, and magnesium—due to reduced insulin levels and increased urinary excretion.

Better options for this group include:

• Ultima Replenisher: Zero sugar, zero calories, broad electrolyte profile including magnesium
• Transparent Labs Hydrate: Low-carb, clean label, well-rounded electrolyte spectrum
• Nuun Sport: Low-calorie tablets with a solid electrolyte profile

For Kids and Hydration-Sensitive Individuals

Consider lower-sugar alternatives. Both products contain sugar, though from natural sources. For children or those monitoring sugar intake carefully, neither is the ideal first choice.

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How Do They Compare to Other Products on the Market?

The electrolyte category is crowded. Here’s how Skratch Labs and Liquid I.V. stack up against some of the other top contenders:

Nuun Sport
Nuun uses effervescent tablets with a low-sugar, lower-calorie formula (~1g sugar, ~15 calories per tablet). It’s a solid everyday option for those who want electrolytes without carbs, though it’s less suitable for fueling intense, prolonged exercise.

Transparent Labs Hydrate
A clean-label option with a well-rounded electrolyte profile. It contains no artificial colors, flavors, or sweeteners, and includes a meaningful dose of sodium, potassium, and magnesium. A strong competitor for both athletes and everyday users who prioritize ingredient transparency.

Ultima Replenisher
Zero sugar, zero calories, and colored with real fruit and vegetable juice. Contains magnesium, which Liquid I.V. lacks. A solid choice for keto users and those avoiding sugar entirely, though the electrolyte doses are lower than Skratch Labs for intense athletic needs.

Nectar Hydration Packets
A newer entrant to the space, Nectar focuses on clean, low-sugar formulations with a competitive electrolyte panel. Worth exploring for those who want variety, though brand transparency and third-party testing data are still catching up to more established players.

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Ingredient Red Flags: What to Avoid in Electrolyte Powders

When evaluating any hydration product—not just the two featured here—watch out for:

• Artificial colors (FD&C Red 40, Blue 1, Yellow 5, etc.): Associated with allergic reactions and, in some studies, behavioral changes in children
• Artificial flavors: Broad catch-all term that can mask dozens of synthetic compounds
• Excess sugar or high-fructose corn syrup: Unnecessary for non-athletic use and detrimental to metabolic health over time
• Maltodextrin: A highly processed, high-glycemic filler often used to bulk up powders without adding nutritional value
• Excessive citric acid: Can erode tooth enamel with habitual consumption
• Soy: A common allergen that serves no hydration purpose
• Gluten-containing fillers: Relevant for those with celiac disease or gluten sensitivity

Skratch Labs avoids virtually all of these. Liquid I.V. avoids most, but does use citric acid and artificial flavor compounds.

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Value for Money

Both products are priced in a similar range—roughly $1.50–$2.00 per serving depending on where you buy and how much you purchase at once. Bulk purchasing (via a tub of Skratch Labs or a box of Liquid I.V.) reduces per-serving cost meaningfully.

For athletes, Skratch Labs offers better value: you’re getting a performance-grade formula with real food ingredients and meaningful carbohydrates for fueling workouts. Paying a slightly higher per-serving cost is justified when performance and recovery are the goals.

For everyday users, Liquid I.V.’s single-serve packets eliminate waste and are easy to carry—you only use what you need, when you need it. The convenience premium is real, and for many people, it’s worth it.

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The Verdict: Which One Should You Choose?

Here’s the bottom line.

Choose Skratch Labs if you:

• Are an athlete training for more than 60–90 minutes at a stretch
• Need fuel (carbohydrates) alongside hydration during intense exercise
• Prioritize clean, real-food ingredients with no artificial flavors
• Are training in heat and need substantial sodium replacement
• Value a formula developed from real sports science for serious performers

Choose Liquid I.V. if you:

• Want an easy, everyday hydration boost that actually tastes great
• Need something portable and convenient for travel, commuting, or the office
• Are recovering from illness, a hangover, or dehydration from travel
• Prefer a lighter calorie load without sacrificing taste
• Are newer to electrolyte supplementation and want something approachable

Consider an alternative (like Ultima Replenisher or Transparent Labs Hydrate) if you:

• Follow a strict ketogenic or low-carb diet
• Want zero sugar and zero calories with a full electrolyte panel
• Are highly sensitive to stevia or citric acid

Neither product is universally superior—they serve genuinely different audiences. The best electrolyte powder is the one that matches your specific needs, your lifestyle, and your goals. Use this guide to make the call with confidence.

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Frequently Asked Questions

Can I use Skratch Labs for everyday hydration (not just workouts)?
Yes, but the 80-calorie, 19g carbohydrate per serving count may be unnecessary if you’re not exercising. For light days or sedentary use, you’d be better served by a lower-calorie option.

Is Liquid I.V. safe to drink every day?
For most healthy adults, yes. However, the 500 mg of sodium per packet is meaningful—if you’re already eating a high-sodium diet, daily use could push your intake above recommended daily limits (2,300 mg for most adults per the American Heart Association).

Does Liquid I.V. actually hydrate you 2–3x faster than water?
This claim is based on the ORS mechanism, which is legitimate science. In clinical dehydration contexts, ORS-style formulations do hydrate faster than plain water. However, the “2–3x” figure is a marketing extrapolation, and peer-reviewed evidence for this specific product and specific claim is limited.

Which product has more magnesium?
Skratch Labs—by a wide margin. It provides approximately 44 mg of magnesium per serving. Liquid I.V. contains none. For athletes or those prone to muscle cramps, this distinction is significant.

Are there any safety concerns with electrolyte supplements?
Electrolyte supplements are generally safe for healthy adults when used as directed. However, overconsumption—especially of sodium—can be problematic for people with high blood pressure, kidney disease, or heart conditions. Always consult a healthcare provider if you have underlying health conditions before adding any supplement to your routine.

What about electrolyte safety more broadly?
More is not always better. Hyponatremia (dangerously low sodium caused by drinking too much plain water without electrolytes) is a real risk for endurance athletes, but so is hypernatremia from excessive electrolyte supplementation. Stick to recommended ranges and listen to your body.