SLF Electrolyte Comparison · 2026
C4 Performance Energy
Everyday Hydration · Exercise & Workouts · Keto & Low-Carb
Check Price at CVSRead full review ↗
Liquid I.V. Energy Sugar-Free
Everyday Hydration · Exercise & Workouts · Travel
Check Price at CVSRead full review ↗Liquid I.V. Energy Sugar-Free
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 | C4 Performance Energy | Liquid I.V. Energy Sugar-Free | 🏆 Edge |
|---|---|---|---|
| Sodium | 40 mg | 500 mg | Liquid I.V. Energy Sugar-Free |
| Potassium | 20 mg | 370 mg | Liquid I.V. Energy Sugar-Free |
| Magnesium | Not listed | 85 mg | Liquid I.V. Energy Sugar-Free |
| Sugar | 0.0 g | 0.0 g | Tie |
| Calories | 10 | 20 | C4 Performance Energy |
| Sweetener | Sucralose; Acesulfame Potassium | Allulose, stevia leaf extract | Preference |
| Cost per serving | $3.19 | $1.78 | Liquid I.V. Energy Sugar-Free |
| SLF rating | ★★★★☆4.0/5 | ★★★★☆4.0/5 | Tie |
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.
C4 Performance Energy
- Caffeine 200 mg
- CarnoSyn beta-alanine
- BetaPower betaine anhydrous
- Vitamin B12 6 mcg
Good performance-energy option; weak choice for electrolyte replacement.
Liquid I.V. Energy Sugar-Free
- 200 mg L-theanine
- Coffeeberry Energy coffee fruit extract
- CognatiQ coffee fruit extract
- vitamin C
- vitamins B3
- B5
- B6 and B12
- amino acids L-glutamine and L-alanine
A compelling hydration-plus-energy formula with considerably more hydration emphasis than a conventional energy drink and a moderate 100 mg caffeine dose balanced by 200…
Key Differences
The most meaningful data-backed differences in this matchup.
Liquid I.V. Energy Sugar-Free
Why it matters: Higher sodium can better replace larger sweat losses during prolonged exercise or heat.
Liquid I.V. Energy Sugar-Free
Why it matters: A lower cost per serving can make frequent use more practical.
Liquid I.V. Energy Sugar-Free
Why it matters: Potassium supports fluid balance and normal muscle function.
Liquid I.V. Energy 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 C4 Performance Energy if…
- Everyday Hydration
- Exercise & Workouts
- Keto & Low-Carb
- Pre Workout Energy
- Gym Sessions
- Active Adults
- And Shoppers Wanting A Zero Sugar Energy Drink.
- Energy
Good performance-energy option; weak choice for electrolyte replacement.
Choose Liquid I.V. Energy Sugar-Free if…
- Everyday Hydration
- Exercise & Workouts
- Travel
- Keto & Low-Carb
- Adults Seeking Balanced Energy For Work
- Social Occasions Or Afternoon Slumps While Also Getting Substantial Electrolyte Support
- Energy
- Hydration
A compelling hydration-plus-energy formula with considerably more hydration emphasis than a conventional energy drink and a moderate 100 mg caffeine dose balanced by 200 mg L-theanine.
Pros and Considerations
C4 Performance Energy
✓ Strengths
- Moderate sodium level suits everyday hydration needs
- Sugar-free formula
- Third-party sport certification is reported
- Fits keto and low-carbohydrate lifestyles
● Keep in Mind
- Magnesium amount is not disclosed in the current SLF record
- Premium cost per serving
Liquid I.V. Energy Sugar-Free
✓ Strengths
- Substantial sodium supports exercise and hot-weather hydration
- Sugar-free formula
- Provides meaningful potassium
- Includes a useful amount of magnesium
- Fits keto and low-carbohydrate lifestyles
● Keep in Mind
- Premium cost per serving
Liquid I.V. Energy Sugar-Free
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 C4 Performance Energy instead if you:
- Everyday Hydration
- Exercise & Workouts
- Keto & Low-Carb
- Pre Workout Energy
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.
C4 Performance Energy
Check Price at CVS Liquid I.V. Energy Sugar-Free
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?
Liquid I.V. Energy Sugar-Free contains 500 mg of sodium per serving, compared with 40 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?
Liquid I.V. Energy Sugar-Free is currently less expensive at $1.78 per serving, compared with $3.19. Pricing can change by retailer and package size.
What functional ingredients does each product include?
C4 Performance Energy lists Caffeine 200 mg, CarnoSyn beta-alanine, BetaPower betaine anhydrous, Vitamin B12 6 mcg. Liquid I.V. Energy Sugar-Free lists 200 mg L-theanine, Coffeeberry Energy coffee fruit extract, CognatiQ coffee fruit extract, vitamin C, vitamins B3, B5. Functional ingredients supplement the core electrolyte profile but do not automatically make one product better for every use.
Which product is better overall?
Liquid I.V. Energy Sugar-Free earns the higher SLF comparison score based on the available formula, value, rating, and intended-use data. C4 Performance Energy 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.