SLF Electrolyte Comparison · 2026
Key Nutrients Electrolyte
Everyday Hydration · Exercise & Workouts · Recovery
Check Current PriceRead full review ↗
Gainful High Performing Hydration
Hot-Weather Endurance · Everyday Hydration · Exercise & Workouts
Check Current PriceRead full review ↗Key Nutrients Electrolyte
Best overall data score for this matchup based on formula, value, rating, and intended use.
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Key Nutrients
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At a Glance
A quick side-by-side look at nutrition, value, and overall performance.
| Feature | Key Nutrients Electrolyte | Gainful High Performing Hydration | 🏆 Edge |
|---|---|---|---|
| Sodium | 103 mg | 400 mg | Gainful High Performing Hydration |
| Potassium | 250 mg | 150 mg | Key Nutrients Electrolyte |
| Magnesium | 100 mg | 200 mg | Gainful High Performing Hydration |
| Sugar | 0.0 g | 2.0 g | Gainful High Performing Hydration |
| Calories | 0 | 15 | Gainful High Performing Hydration |
| Sweetener | Stevia Leaf Extract | Cane Sugar and Steviol Glycosides | Preference |
| Cost per serving | $0.60 | $1.62 | Key Nutrients Electrolyte |
| SLF rating | ★★★★★4.6/5 | ★★★★★4.5/5 | Key Nutrients Electrolyte |
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.
Key Nutrients Electrolyte
- Vitamin C
- Vitamin D3
- Vitamin B6
- Vitamin B12
- Zinc
- Six essential electrolytes
Key Nutrients is a strong zero-sugar, lighter-sodium choice for daily hydration, but it is less compelling for marathon runners.
Gainful High Performing Hydration
- Four-Electrolyte Blend
- Natural Flavors
Best for users who value clean ingredients, low sugar, and high magnesium more than lowest cost per serving.
Key Differences
The most meaningful data-backed differences in this matchup.
Gainful High Performing Hydration
Why it matters: Higher sodium can better replace larger sweat losses during prolonged exercise or heat.
Key Nutrients Electrolyte
Why it matters: Lower sugar may suit people prioritizing reduced-sugar hydration.
Key Nutrients Electrolyte
Why it matters: A lower cost per serving can make frequent use more practical.
Key Nutrients Electrolyte
Why it matters: Potassium supports fluid balance and normal muscle function.
Key Nutrients Electrolyte
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 Key Nutrients Electrolyte if…
- Everyday Hydration
- Exercise & Workouts
- Recovery
- Travel
- Keto & Low-Carb
- Daily Hydration
- Office Hydration
- Wellness
Key Nutrients is a strong zero-sugar, lighter-sodium choice for daily hydration, but it is less compelling for marathon runners.
Choose Gainful High Performing Hydration if…
- Hot-Weather Endurance
- Everyday Hydration
- Exercise & Workouts
- Recovery
- Travel
- Heat & Outdoor Work
- Daily Training
- Gym Workouts
Best for users who value clean ingredients, low sugar, and high magnesium more than lowest cost per serving.
Pros and Considerations
Key Nutrients Electrolyte
✓ 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
Gainful High Performing Hydration
✓ Strengths
- Moderate sodium level suits everyday hydration needs
- Includes a useful amount of magnesium
● Keep in Mind
- Contains 2.0 g sugar per serving
Key Nutrients Electrolyte
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 Gainful High Performing 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.
Key Nutrients Electrolyte
Check Price on Amazon Gainful High Performing Hydration
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?
Gainful High Performing Hydration contains 400 mg of sodium per serving, compared with 103 mg. Higher sodium may be more useful when replacing larger sweat losses during prolonged exercise or hot conditions.
Which has less sugar?
Gainful High Performing Hydration has less sugar at 2.0 g per serving, versus 0.0 g. This may matter for people limiting added sugar.
Which is less expensive per serving?
Key Nutrients Electrolyte is currently less expensive at $0.60 per serving, compared with $1.62. Pricing can change by retailer and package size.
What functional ingredients does each product include?
Key Nutrients Electrolyte lists Vitamin C, Vitamin D3, Vitamin B6, Vitamin B12, Zinc, Six essential electrolytes. Gainful High Performing Hydration lists Four-Electrolyte Blend, Natural Flavors. Functional ingredients supplement the core electrolyte profile but do not automatically make one product better for every use.
Which product is better overall?
Key Nutrients Electrolyte earns the higher SLF comparison score based on the available formula, value, rating, and intended-use data. Gainful High Performing 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.