SLF Electrolyte Comparison · 2026
XTEND Healthy Hydration
Hot-Weather Endurance · Everyday Hydration · Exercise & Workouts
Check Current PriceRead full review ↗
Nuun Sport Electrolyte Tablets
Everyday Hydration · Exercise & Workouts · Travel
Check Current PriceRead full review ↗Nuun Sport Electrolyte Tablets
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 | XTEND Healthy Hydration | Nuun Sport Electrolyte Tablets | 🏆 Edge |
|---|---|---|---|
| Sodium | 450 mg | 300 mg | XTEND Healthy Hydration |
| Potassium | 380 mg | 150 mg | XTEND Healthy Hydration |
| Magnesium | 40 mg | 17 mg | XTEND Healthy Hydration |
| Sugar | 0.0 g | 1.0 g | Nuun Sport Electrolyte Tablets |
| Calories | 5 | 15 | XTEND Healthy Hydration |
| Sweetener | Sucralose and Acesulfame Potassium | Stevia Leaf Extract | Preference |
| Cost per serving | $1.25 | $0.70 | Nuun Sport Electrolyte Tablets |
| SLF rating | ★★★★☆4.4/5 | ★★★★★4.6/5 | Nuun Sport Electrolyte Tablets |
Hydra Cup ShakerShark 28 oz Shaker Bottle 2-Pack
A 28 oz shaker designed with a weighted mixing whisk to blend protein, electrolytes, collagen, and workout hydration powders with less shaking and fewer clumps.
Shop at AmazonFunctional Ingredients
Additional active or performance-oriented ingredients recorded in the SLF database.
XTEND Healthy Hydration
- Phosphorus (120 mg)
- Vitamin D
- Vitamin E
- Niacin
- Vitamin B6
- Vitamin B12
- Pantothenic Acid
Best for workout, heat, travel, and general sports hydration.
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,…
Key Differences
The most meaningful data-backed differences in this matchup.
XTEND Healthy Hydration
Why it matters: Higher sodium can better replace larger sweat losses during prolonged exercise or heat.
XTEND Healthy Hydration
Why it matters: Lower sugar may suit people prioritizing reduced-sugar hydration.
Nuun Sport Electrolyte Tablets
Why it matters: A lower cost per serving can make frequent use more practical.
XTEND Healthy Hydration
Why it matters: Potassium supports fluid balance and normal muscle function.
XTEND Healthy Hydration
Why it matters: A broader functional-ingredient profile may appeal to users seeking vitamins or carbohydrate-assisted hydration.
Who Should Choose Each Product?
Use these guidelines to find the best fit for your hydration needs and lifestyle.
Choose XTEND Healthy Hydration if…
- Hot-Weather Endurance
- Everyday Hydration
- Exercise & Workouts
- Recovery
- Travel
- Heat & Outdoor Work
- Keto & Low-Carb
- Daily Sports Hydration
Best for workout, heat, travel, and general sports hydration.
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.
Pros and Considerations
XTEND Healthy Hydration
✓ Strengths
- Moderate sodium level suits everyday hydration needs
- Sugar-free formula
- Provides meaningful potassium
- Fits keto and low-carbohydrate lifestyles
● Keep in Mind
- Taste and electrolyte strength may not suit every preference
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
Nuun Sport Electrolyte Tablets
SLF scoring considers nutrition, formula, price, certifications, intended use, and value.
Why it earns the edge
- Moderate sodium level suits everyday hydration needs
- Competitive cost per serving
- Fits keto and low-carbohydrate lifestyles
Choose XTEND Healthy Hydration instead if you:
- Hot-Weather Endurance
- Everyday Hydration
- Exercise & Workouts
- Recovery
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.
XTEND Healthy Hydration
Check Price on Amazon Nuun Sport Electrolyte Tablets
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?
XTEND Healthy Hydration contains 450 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?
Nuun Sport Electrolyte Tablets is currently less expensive at $0.70 per serving, compared with $1.25. Pricing can change by retailer and package size.
What functional ingredients does each product include?
XTEND Healthy Hydration lists Phosphorus (120 mg), Vitamin D, Vitamin E, Niacin, Vitamin B6, Vitamin B12. Nuun Sport Electrolyte Tablets lists Electrolyte BlendSodium BicarbonatePotassium BicarbonateMagnesiumCalcium. Functional ingredients supplement the core electrolyte profile but do not automatically make one product better for every use.
Which product is better overall?
Nuun Sport Electrolyte Tablets earns the higher SLF comparison score based on the available formula, value, rating, and intended-use data. XTEND Healthy Hydration 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.