SLF Electrolyte Comparison · 2026
Nuun Sport Electrolyte Tablets
Everyday Hydration · Exercise & Workouts · Travel
Check Current PriceRead full review ↗
Re-Lyte Hydration Electrolyte Mix
Hot-Weather Endurance · Endurance Athletes · Everyday Hydration
Check Current PriceRead full review ↗Re-Lyte Hydration Electrolyte Mix
Best overall data score for this matchup based on formula, value, rating, and intended use.
Explore Both Brands
Continue to the full Brand Hubs for products, flavors, buying guides, and every published comparison.
Watch Product Overviews
Watch both product overview videos before reading the detailed side-by-side comparison.
Nuun
Watch this quick overview before reading the detailed side-by-side comparison.
Re-Lyte
Watch this quick overview before reading the detailed side-by-side comparison.
At a Glance
A quick side-by-side look at nutrition, value, and overall performance.
| Feature | Nuun Sport Electrolyte Tablets | Re-Lyte Hydration Electrolyte Mix | 🏆 Edge |
|---|---|---|---|
| Sodium | 300 mg | 810 mg | Re-Lyte Hydration Electrolyte Mix |
| Potassium | 150 mg | 400 mg | Re-Lyte Hydration Electrolyte Mix |
| Magnesium | 17 mg | 50 mg | Re-Lyte Hydration Electrolyte Mix |
| Sugar | 1.0 g | 0.0 g | Nuun Sport Electrolyte Tablets |
| Calories | 15 | 0 | Nuun Sport Electrolyte Tablets |
| Sweetener | Stevia Leaf Extract | Stevia Leaf Extract | Preference |
| Cost per serving | $0.70 | $0.67 | Re-Lyte Hydration Electrolyte Mix |
| SLF rating | ★★★★★4.6/5 | ★★★★★4.9/5 | Re-Lyte Hydration Electrolyte Mix |
VELOMIX Insulated Stainless Steel Shaker Bottle
A 24 oz insulated stainless steel shaker bottle designed to keep drinks cold while mixing protein, electrolytes, and workout hydration on the go.
Functional Ingredients
Additional active or performance-oriented ingredients recorded in the SLF database.
Nuun Sport Electrolyte Tablets
- Electrolyte BlendSodium BicarbonatePotassium BicarbonateMagnesiumCalcium
Nuun Sport is one of the best electrolyte tablets for people who want convenient, low-sugar hydration. Its balanced formula works well for hiking, travel,…
Re-Lyte Hydration Electrolyte Mix
- Real Salt®Magnesium GlycinateMagnesium MalateCoconut Water PowderTrace Minerals
Re-Lyte is one of the best electrolyte powders available for people following keto or carnivore diets, practicing intermittent fasting, or training in hot conditions.…
Key Differences
The most meaningful data-backed differences in this matchup.
Re-Lyte Hydration Electrolyte Mix
Why it matters: Higher sodium can better replace larger sweat losses during prolonged exercise or heat.
Re-Lyte Hydration Electrolyte Mix
Why it matters: Lower sugar may suit people prioritizing reduced-sugar hydration.
Re-Lyte Hydration Electrolyte Mix
Why it matters: A lower cost per serving can make frequent use more practical.
Re-Lyte Hydration 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 Nuun Sport Electrolyte Tablets if…
- Everyday Hydration
- Exercise & Workouts
- Travel
- Daily Hydration
- Cycling
- Hiking
- Running
- Light Workouts
Nuun Sport is one of the best electrolyte tablets for people who want convenient, low-sugar hydration. Its balanced formula works well for hiking, travel, cycling, and everyday workouts, though athletes with heavy sweat loss may benefit from higher-sodium products like LMNT.
Choose Re-Lyte Hydration Electrolyte Mix if…
- Hot-Weather Endurance
- Endurance Athletes
- Everyday Hydration
- Exercise & Workouts
- Recovery
- Travel
- Heat & Outdoor Work
- Keto & Low-Carb
Re-Lyte is one of the best electrolyte powders available for people following keto or carnivore diets, practicing intermittent fasting, or training in hot conditions. Its exceptionally high sodium content and clean ingredient profile make it a standout option for serious electrolyte replacement.
Pros and Considerations
Nuun Sport Electrolyte Tablets
✓ Strengths
- Moderate sodium level suits everyday hydration needs
- Competitive cost per serving
- Fits keto and low-carbohydrate lifestyles
● Keep in Mind
- Contains 1.0 g sugar per serving
Re-Lyte Hydration Electrolyte Mix
✓ Strengths
- Substantial sodium supports exercise and hot-weather hydration
- 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 Hydration Electrolyte Mix
SLF scoring considers nutrition, formula, price, certifications, intended use, and value.
Why it earns the edge
- Substantial sodium supports exercise and hot-weather hydration
- Sugar-free formula
- Provides meaningful potassium
- Includes a useful amount of magnesium
Choose Nuun Sport Electrolyte Tablets instead if you:
- Everyday Hydration
- Exercise & Workouts
- Travel
- Daily Hydration
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.
Nuun Sport Electrolyte Tablets
Check Price on Amazon Re-Lyte Hydration Electrolyte Mix
Check Price on AmazonFind 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 Hydration Electrolyte Mix contains 810 mg of sodium per serving, compared with 300 mg. Higher sodium may be more useful when replacing larger sweat losses during prolonged exercise or hot conditions.
Which has less sugar?
Nuun Sport Electrolyte Tablets has less sugar at 1.0 g per serving, versus 0.0 g. This may matter for people limiting added sugar.
Which is less expensive per serving?
Re-Lyte Hydration Electrolyte Mix is currently less expensive at $0.67 per serving, compared with $0.70. Pricing can change by retailer and package size.
What functional ingredients does each product include?
Nuun Sport Electrolyte Tablets lists Electrolyte BlendSodium BicarbonatePotassium BicarbonateMagnesiumCalcium. Re-Lyte Hydration Electrolyte Mix lists Real Salt®Magnesium GlycinateMagnesium MalateCoconut Water PowderTrace Minerals. Functional ingredients supplement the core electrolyte profile but do not automatically make one product better for every use.
Which product is better overall?
Re-Lyte Hydration Electrolyte Mix earns the higher SLF comparison score based on the available formula, value, rating, and intended-use data. Nuun Sport Electrolyte Tablets may still be the better fit when its specific use cases align more closely with your needs.
Popular Electrolyte Comparisons
Relevant brand matchups ranked by shopper interest.
Nutrition facts, pricing, and availability can change. Verify the current label before purchasing. This comparison is informational and is not medical advice.