If you’re trying to decide between Re-Lyte and Waterboy, you’re probably looking for more than just hydration. You want to know which one contains more sodium, which uses better salt, whether either contains sugar, and how many calories you’re actually drinking.

While both are electrolyte powders designed to improve hydration, they target slightly different users. Re-Lyte focuses on high-mineral hydration inspired by ancestral nutrition, while Waterboy is better known for hangover recovery and everyday hydration.

In this comparison, we’ll focus on the nutrients that matter most:

• Primary salt source
• Sodium
• Potassium
• Sugar
• Calories

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Quick Comparison Table

Feature	Re-Lyte Hydration	Waterboy Hydration
Primary Salt Source	Real Salt (Ancient Sea Salt)	Sea Salt + Sodium Citrate
Sodium	810 mg	650 mg
Potassium	400 mg	350 mg
Sugar	0 g	0 g
Calories	0	10 calories
Best For	Heavy sweating, fasting, keto	Daily hydration, hangover recovery

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Primary Salt Source

Re-Lyte

One of Re-Lyte’s biggest selling points is its use of Real Salt, an unrefined ancient sea salt.

Unlike ordinary table salt, Real Salt naturally contains dozens of trace minerals including:

• Magnesium
• Calcium
• Potassium
• Zinc
• Iron

The company markets this as a more natural electrolyte source with minimal processing.

Advantages

• Naturally sourced minerals
• No anti-caking agents
• Less processed than table salt

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Waterboy

Waterboy primarily gets its sodium from:

• Sea salt
• Sodium citrate

Sodium citrate is commonly used in oral rehydration solutions because it:

• Tastes less salty
• Mixes easily
• May reduce stomach irritation
• Helps improve electrolyte absorption

Although it doesn’t contain as many trace minerals as Real Salt, sodium citrate is widely used in sports hydration products.

Winner: Re-Lyte

If you value minimally processed mineral-rich salt, Re-Lyte has the advantage.

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Sodium Comparison

Sodium is the most important electrolyte lost through sweat.

Drink	Sodium
Re-Lyte	810 mg
Waterboy	650 mg

Re-Lyte

810 mg is one of the highest sodium amounts among popular electrolyte powders.

It’s designed for:

• Long workouts
• Hot weather
• Keto diets
• Fasting
• Heavy sweaters

Waterboy

650 mg is still a high amount compared to many hydration mixes.

It’s enough for:

• Exercise
• Travel
• Recovery
• Hangovers
• Mild dehydration

Winner: Re-Lyte

Re-Lyte provides around 160 mg more sodium, making it better for replacing heavy sweat losses.

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Potassium Comparison

Potassium works with sodium to support:

• Muscle contractions
• Fluid balance
• Nerve function

Drink	Potassium
Re-Lyte	400 mg
Waterboy	350 mg

Re-Lyte

Provides a generous 400 mg potassium per serving.

This supports:

• Better electrolyte balance
• Muscle recovery
• Reduced cramping

Waterboy

Contains 350 mg potassium, which is still significantly higher than many sports drinks.

Winner: Re-Lyte

Re-Lyte offers slightly more potassium, though the difference is modest.

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Sugar Comparison

Many sports drinks rely on sugar to improve taste or help transport electrolytes.

Re-Lyte

• 0 grams sugar
• Sweetened with stevia

Suitable for:

• Keto
• Low-carb diets
• Fasting
• Diabetics (consult a healthcare professional if needed)

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Waterboy

• 0 grams sugar
• Uses non-sugar sweeteners

Designed to hydrate without adding unnecessary sugar.

Winner: Tie

Both products are completely sugar-free.

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Calories Comparison

Drink	Calories
Re-Lyte	0 calories
Waterboy	10 calories

Re-Lyte

Contains no calories, making it ideal for:

• Fasting
• Weight loss
• Calorie-restricted diets

Waterboy

Contains about 10 calories depending on the flavor.

While this is still very low, it isn’t completely calorie-free.

Winner: Re-Lyte

Zero calories make it the better choice for strict fasting or calorie tracking.

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Which Is Better?

Choose Re-Lyte if you:

• Sweat heavily
• Follow a keto diet
• Practice intermittent fasting
• Want the highest sodium intake
• Prefer mineral-rich ancient sea salt
• Need zero calories

Choose Waterboy if you:

• Need hydration after drinking alcohol
• Prefer a smoother taste
• Want a balanced electrolyte formula
• Need everyday hydration without excessive sodium

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Feature-by-Feature Winner

Category	Winner
Primary Salt Source	🏆 Re-Lyte
Sodium	🏆 Re-Lyte
Potassium	🏆 Re-Lyte
Sugar	🤝 Tie
Calories	🏆 Re-Lyte

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Final Verdict

Both Re-Lyte and Waterboy are excellent sugar-free electrolyte powders, but they serve slightly different needs.

If your priority is maximum electrolyte replacement, Re-Lyte comes out ahead. Its Real Salt formula, 810 mg sodium, 400 mg potassium, 0 grams sugar, and 0 calories make it an excellent option for athletes, heavy sweaters, people following keto, or anyone fasting.

Waterboy, on the other hand, is a strong choice for everyday hydration and hangover recovery. With 650 mg sodium, 350 mg potassium, 0 grams sugar, and only 10 calories, it offers effective hydration in a formula that’s easy to drink.

Bottom line

• Best for heavy hydration: ⭐ Re-Lyte
• Best for daily use and hangovers: ⭐ Waterboy