SLF Electrolyte Comparison · 2026
CVS Rapid Hydration Sugar Free
Hot-Weather Endurance · Exercise & Workouts · Travel
Check Price at CVSRead full review ↗
Nuun Sport Electrolyte Tablets
Everyday Hydration · Exercise & Workouts · Travel
Check Price at CVSRead 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 | CVS Rapid Hydration Sugar Free | Nuun Sport Electrolyte Tablets | 🏆 Edge |
|---|---|---|---|
| Sodium | 510 mg | 300 mg | CVS Rapid Hydration Sugar Free |
| Potassium | Not listed | 150 mg | Nuun Sport Electrolyte Tablets |
| Magnesium | Not listed | 17 mg | Nuun Sport Electrolyte Tablets |
| Sugar | 0.0 g | 1.0 g | Nuun Sport Electrolyte Tablets |
| Calories | 0 | 15 | Nuun Sport Electrolyte Tablets |
| Sweetener | Sugar-free formula; exact current sweetener blend requires package-label verification | Stevia Leaf Extract | Preference |
| Cost per serving | $1.67 | $0.70 | Nuun Sport Electrolyte Tablets |
| SLF rating | ★★★★☆3.5/5 | ★★★★★4.6/5 | Nuun Sport Electrolyte Tablets |
HydraPeak Voyager 40 oz Stainless Steel Tumbler
Keep hydration close all day with this 40 oz insulated stainless steel tumbler featuring a handle, 2-in-1 sip-and-straw lid, non-slip base, and cup-holder-friendly design.
Shop HydraPeak at CVSFunctional Ingredients
Additional active or performance-oriented ingredients recorded in the SLF database.
CVS Rapid Hydration Sugar Free
- Vitamins B3
- B5
- B6
- B12 and C
A strong CVS-exclusive value pick for sugar-free, high-sodium hydration and one of the most natural store-brand competitors to Liquid I.V. Sugar-Free.
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.
CVS Rapid Hydration Sugar Free
Why it matters: Higher sodium can better replace larger sweat losses during prolonged exercise or heat.
CVS Rapid Hydration Sugar Free
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.
CVS Rapid Hydration Sugar Free
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 CVS Rapid Hydration Sugar Free if…
- Hot-Weather Endurance
- Exercise & Workouts
- Travel
- Heat & Outdoor Work
- Keto & Low-Carb
- Cvs Shoppers Seeking Sugar Free Hydration For Travel
- Hot Weather Or Higher Sodium Electrolyte Replacement
A strong CVS-exclusive value pick for sugar-free, high-sodium hydration and one of the most natural store-brand competitors to Liquid I.V. Sugar-Free.
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
CVS Rapid Hydration Sugar Free
✓ Strengths
- Substantial sodium supports exercise and hot-weather hydration
- Sugar-free formula
● Keep in Mind
- Mineral amounts beyond sodium are not disclosed in the current SLF record
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 CVS Rapid Hydration Sugar Free instead if you:
- Hot-Weather Endurance
- Exercise & Workouts
- Travel
- Heat & Outdoor Work
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.
CVS Rapid Hydration Sugar Free
Check Price at CVS Nuun Sport Electrolyte Tablets
Check Price at CVSFind 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?
CVS Rapid Hydration Sugar Free contains 510 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 $1.67. Pricing can change by retailer and package size.
What functional ingredients does each product include?
CVS Rapid Hydration Sugar Free lists Vitamins B3, B5, B6, B12 and C. 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. CVS Rapid Hydration Sugar Free 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.