SLF Electrolyte Comparison · 2026
Ultima Replenisher Electrolyte Mix
Everyday Hydration · Travel · Keto & Low-Carb
Check Price at TargetRead full review ↗
Re-Lyte Kids
Hot-Weather Endurance · Everyday Hydration · Exercise & Workouts
Check Price at TargetRead full review ↗Ultima Replenisher Electrolyte Mix
Best overall data score for this matchup based on formula, value, rating, and intended use.
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At a Glance
A quick side-by-side look at nutrition, value, and overall performance.
| Feature | Ultima Replenisher Electrolyte Mix | Re-Lyte Kids | 🏆 Edge |
|---|---|---|---|
| Sodium | 55 mg | 340 mg | Re-Lyte Kids |
| Potassium | 250 mg | 150 mg | Ultima Replenisher Electrolyte Mix |
| Magnesium | 100 mg | 25 mg | Ultima Replenisher Electrolyte Mix |
| Sugar | 0.0 g | 0.0 g | Tie |
| Calories | 0 | 0 | Tie |
| Sweetener | Organic Stevia Leaf Extract | Rebaudioside A (Stevia Leaf Extract) | Preference |
| Cost per serving | $0.56 | $0.80 | Ultima Replenisher Electrolyte Mix |
| SLF rating | ★★★★★4.7/5 | ★★★★★4.7/5 | Tie |
Owala 12oz Kids' Stainless Steel Straw Tumbler
A kid-friendly insulated tumbler that keeps water cold and makes everyday hydration easy. The 12 oz size, straw and spill-resistant design make it a great pick for school, sports and everyday use.
Functional Ingredients
Additional active or performance-oriented ingredients recorded in the SLF database.
Ultima Replenisher Electrolyte Mix
- MagnesiumVitamin CZincElectrolyte BlendTrace Minerals
Ultima Replenisher is a strong zero-sugar, lighter-sodium choice for everyday hydration, low-sodium diets, keto, general wellness, but it is less compelling for heavy endurance…
Re-Lyte Kids
- Coconut Water Powder (65 mg)Redmond Real Salt Trace MineralsFruit and Vegetable Extracts for Color
Best for zero-sugar routine hydration, youth sports, travel, and warm-weather use.
Key Differences
The most meaningful data-backed differences in this matchup.
Re-Lyte Kids
Why it matters: Higher sodium can better replace larger sweat losses during prolonged exercise or heat.
Ultima Replenisher Electrolyte Mix
Why it matters: A lower cost per serving can make frequent use more practical.
Ultima Replenisher Electrolyte Mix
Why it matters: Potassium supports fluid balance and normal muscle function.
Who Should Choose Each Product?
Use these guidelines to find the best fit for your hydration needs and lifestyle.
Choose Ultima Replenisher Electrolyte Mix if…
- Everyday Hydration
- Travel
- Keto & Low-Carb
- Low Sodium Diets
- General Wellness
- Wellness
- Teens
Ultima Replenisher is a strong zero-sugar, lighter-sodium choice for everyday hydration, low-sodium diets, keto, general wellness, but it is less compelling for heavy endurance athletes needing very high sodium replacement.
Choose Re-Lyte Kids if…
- Hot-Weather Endurance
- Everyday Hydration
- Exercise & Workouts
- Travel
- Heat & Outdoor Work
- Keto & Low-Carb
- Everyday Kids Hydrationyouth Sportshot Weathertravelfamilies Avoiding Added Sugar
- Kids
Best for zero-sugar routine hydration, youth sports, travel, and warm-weather use.
Pros and Considerations
Ultima Replenisher Electrolyte Mix
✓ Strengths
- Moderate sodium level suits everyday hydration needs
- Sugar-free formula
- Provides meaningful potassium
- Includes a useful amount of magnesium
- Competitive cost per serving
● Keep in Mind
- Taste and electrolyte strength may not suit every preference
Re-Lyte Kids
✓ Strengths
- Moderate sodium level suits everyday hydration needs
- Sugar-free formula
- Competitive cost per serving
- Fits keto and low-carbohydrate lifestyles
● Keep in Mind
- Taste and electrolyte strength may not suit every preference
Ultima Replenisher Electrolyte Mix
SLF scoring considers nutrition, formula, price, certifications, intended use, and value.
Why it earns the edge
- Moderate sodium level suits everyday hydration needs
- Sugar-free formula
- Provides meaningful potassium
- Includes a useful amount of magnesium
Choose Re-Lyte Kids instead if you:
- Hot-Weather Endurance
- Everyday Hydration
- Exercise & Workouts
- Travel
Choose Your Electrolyte
Shop the product that best fits your needs. Amazon is shown first when available, with a direct brand option as the fallback.
Ultima Replenisher Electrolyte Mix
Check Price at Target Re-Lyte Kids
Check Price at TargetFind the electrolyte that fits your needs
Explore the full database by activity, sodium level, sugar preference, goals, budget, and retailer.
Frequently Asked Questions
Data-backed answers based on the current SLF product records.
Which has more sodium?
Re-Lyte Kids contains 340 mg of sodium per serving, compared with 55 mg. Higher sodium may be more useful when replacing larger sweat losses during prolonged exercise or hot conditions.
Which has less sugar?
Tie has less sugar at 0.0 g per serving, versus 0.0 g. This may matter for people limiting added sugar.
Which is less expensive per serving?
Ultima Replenisher Electrolyte Mix is currently less expensive at $0.56 per serving, compared with $0.80. Pricing can change by retailer and package size.
What functional ingredients does each product include?
Ultima Replenisher Electrolyte Mix lists MagnesiumVitamin CZincElectrolyte BlendTrace Minerals. Re-Lyte Kids lists Coconut Water Powder (65 mg)Redmond Real Salt Trace MineralsFruit and Vegetable Extracts for Color. Functional ingredients supplement the core electrolyte profile but do not automatically make one product better for every use.
Which product is better overall?
Ultima Replenisher Electrolyte Mix earns the higher SLF comparison score based on the available formula, value, rating, and intended-use data. Re-Lyte Kids may still be the better fit when its specific use cases align more closely with your needs.
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Nutrition facts, pricing, and availability can change. Verify the current label before purchasing. This comparison is informational and is not medical advice.