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Sport +Caffeine Fresh Lime

Nuun
4.6
★ ★ ★ ★ ★
(75 ratings)
Sodium 300 mg
Chloride 40 mg
Potassium 150 mg
Product Image
Score79
Useful sodium and moderate potassium make this a convenient workout tablet, while 40 mg caffeine adds a mild lift. It is less suitable for stimulant-sensitive users or anyone seeking a heart-focused supplement.
How scoring works
Quantity:10 Tablet(s) • (10 servings)
Goals:

Score 79

Useful sodium and moderate potassium make this a convenient workout tablet, while 40 mg caffeine adds a mild lift. It is less suitable for stimulant-sensitive users or anyone seeking a heart-focused supplement.
How scoring works
$5.79($0.57 per serving)
iHerb
$ 5.99
Vitacost
$ 5.79
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Analysis

The dissolved tablet supplies 300 mg sodium and 150 mg potassium, amounts that suit routine sweat replacement better than the brand's lighter hydration formulas. Chloride is low, so the mineral balance is driven mainly by sodium and potassium salts.

Sodium bicarbonate and potassium bicarbonate support the electrolyte role, while magnesium oxide and calcium carbonate add little at their small amounts. The 40 mg caffeine from green tea extract can provide a mild lift without turning the product into a high-stimulant formula.

The tablet is convenient and contains little sugar, making it easy to use around shorter workouts. Caffeine and a sodium-dominant profile reduce its fit for people seeking gentle or comprehensive cardiovascular support.

Who is it for
  • Adults who want electrolytes with mild caffeine
  • Recreational exercisers with moderate sweat losses
  • Users who prefer a low-sugar effervescent drink
Best for
  • Morning or daytime workouts
  • Routine sweat replacement
  • Light pre-workout hydration

Pros

  • Useful sodium amount for routine exercise
  • Potassium includes a bicarbonate source
  • Contains only a modest caffeine amount
  • Portable and easy to mix

Cons

  • Chloride amount is low
  • Magnesium oxide and calcium carbonate are basic forms
  • Caffeine narrows timing and user suitability
  • Not designed for comprehensive heart support

Warnings

  • The 40 mg caffeine may cause jitters, palpitations, or sleep disruption in sensitive users
  • Avoid late-day use if caffeine affects sleep
  • The 300 mg sodium serving should be counted by people following a sodium-restricted plan

Nutrient quality

80 Highest impact

A useful sodium amount and a focused ingredient list support exercise hydration. Weaker magnesium quality and added caffeine narrow suitability for gentle daily use.

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Ingredient transparency

82 Highest impact

Active amounts and source names are clear, with no hidden blend. Daily-use guidance and non-active ingredients were not included in the supplied details.

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Customer satisfaction

65 Moderate impact

The available satisfaction metric is favorable and the sample provides useful confidence. Specific experience details are absent, so repeated complaints and purpose fit remain uncertain.

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Value for money

88 Highest impact

The useful sodium amount and convenient format support good serving value. A focused formula avoids spending on unnecessary extras.

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Ingredients

IngredientAmount per serving
Calories
15 Calorie(s)
Total Carb
4 Gram(s)
Total Sugars
1 Gram(s)
Calcium (Calcium Carbonate)
 13 mg
Magnesium (Magnesium Oxide)
 25 mg
Chloride (Potassium Chloride)
 40 mg
Sodium (Sodium Bicarbonate, Sodium Carbonate)
 300 mg
Potassium (Potassium Bicarbonate, Potassium Carbonate)
 150 mg
Caffeine (organic Green Tea leaf extract)
 40 mg
Gluten Free Adults 18–50 Kosher Vegetarian
Report overview
Sodium (Sodium Bicarbonate, Sodium Carbonate) · 300 mg OverallScore89
B- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

The sodium dose reaches a useful athletic range and includes bicarbonate buffering. Potassium bicarbonate adds a favorable form, though magnesium oxide reduces supporting-mineral quality. The 40 mg caffeine amount may disturb sleep or cause jitters in children and stimulant-sensitive users.

View ingredientView products
Chloride (Potassium Chloride) · 40 mg OverallScore68
B+ Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyB+ Value

Potassium chloride supplies a soluble functional salt with an additional useful cation, and the 40 mg amount provides only a low contribution to daily chloride intake. The effervescent tablet supports ready ionization, while the label clearly identifies both dose and source. Cost efficiency is good for the chloride delivered.

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Potassium (Potassium Bicarbonate, Potassium Carbonate) · 150 mg OverallScore66
B Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyC- Value

Bicarbonate supports the formula’s electrolyte and alkalizing role, while the carbonate contribution is less clearly characterized. The moderate potassium amount favors light hydration use rather than substantial supplementation. Low-cost convenience helps value, but added caffeine narrows its suitability for some users.

View ingredientView products
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78 Performance

Electrolyte Supreme Lemon-Lime

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<p>Compared with the original, the main advantage is well-chosen mineral and vitamin forms, including magnesium malate, pyridoxal phosphate, and methylcobalamin. Potassium and magnesium remain modest, and the mineral-source labeling is somewhat ambiguous.</p>
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Sport Strawberry Lemonade

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<p>Compared with the original, the main advantage is a useful sodium amount and moderate potassium in a focused exercise-hydration formula. Magnesium oxide is a weaker form, and the potassium amount is modest for focused repletion.</p>
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<p>Compared with the original, the main advantage is all four main electrolytes, with potassium chloride and seawater-derived sodium clearly identified. Magnesium, sodium, and potassium are modest, and the branded trace-mineral terms remain vague.</p>
84 Budget

Sodium Chloride 1000 mg

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<p>The lower serving cost improves affordability compared with the original while providing a concentrated, fully disclosed sodium chloride dose. The formula provides only sodium and chloride, and its substantial sodium load suits specific replacement needs rather than unrestricted use.</p>
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NO! Muscle Cramps

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<p>The lower serving cost improves affordability compared with the original while providing several electrolytes in a convenient liquid format. Chloride dominates, while magnesium and potassium are modest and most chemical forms are not identified.</p>
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TMSport 40000 Volts! Electrolyte Concentrate

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<p>The lower serving cost improves affordability compared with the original while providing meaningful magnesium and chloride. Sodium and potassium are modest, and the mineral forms are not specified.</p>
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Electrolyte Supreme Berry-Licious

Jigsaw Health
<p>The quality-to-cost balance improves on the original through well-chosen mineral and vitamin forms, including bicarbonate salts and active B-vitamin forms. Potassium and magnesium remain modest, and repeated source-level amounts make the mineral label less clear.</p>
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Sport Grape

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<p>The quality-to-cost balance improves on the original through a useful sodium amount and moderate potassium in a focused exercise-hydration formula. Magnesium oxide is a weaker form, and the potassium amount is modest for focused repletion.</p>
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<p>The quality-to-cost balance improves on the original through a substantial vitamin C amount and moderate potassium alongside broad electrolyte coverage. Several mineral forms are basic, and sodium is modest for heavy fluid losses.</p>
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Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Oral potassium supplementation for management of essential hypertension: A meta-analysis of randomized controlled trials.
    Poorolajal J; Zeraati F; Soltanian AR; Sheikh V; Hooshmand E; Maleki A · PloS one · 2017
    Meta-analysis1,213 participants23 studies pooledHeart Health forPotassium
  2. Effect of Potassium Supplementation on Endothelial Function: A Systematic Review and Meta-Analysis of Intervention Studies.
    D'Elia L; Cappuccio FP; Masulli M; La Fata E; Rendina D; Galletti F · Nutrients · 2023
    Meta-analysis332 participants5 studies pooledHeart Health forPotassium
  3. Potassium intake and risk of stroke in women with hypertension and nonhypertension in the Women's Health Initiative.
    Seth A; Mossavar-Rahmani Y; Kamensky V; Silver B; Lakshminarayan K; Prentice R; Van Horn L; Wassertheil-Smoller S · Stroke · 2015
    Cohort study90,137 participantsHeart Health forPotassium
  4. Potassium intake, stroke, and cardiovascular disease a meta-analysis of prospective studies.
    D'Elia L; Barba G; Cappuccio FP; Strazzullo P · Journal of the American College of Cardiology · 2011
    Meta-analysis247,510 participants11 studies pooledHeart Health forPotassium
  5. Associations between sodium, potassium, and blood pressure: results from the Hispanic Community Health Study/Study of Latinos, a prospective cohort study.
    Swift SL; Sotres-Alvarez D; Raij L; Wassertheil-Smoller S; Schneiderman N; Llabre M; Zeki Al Hazzouri A; Rundek T; Van Horn L; Daviglus M; Castaneda S; Youngblood M; Mossavar-Rahmani Y; Elfassy T · The American journal of clinical nutrition · 2024
    Cohort study11,429 participantsHeart Health forPotassium
  6. Serum potassium levels provide prognostic information in symptomatic heart failure beyond traditional clinical variables.
    Toledo CC; Vellosa Schwartzmann P; Miguel Silva L; da Silva Ferreira G; Bianchini Cardoso F; Citelli Ribeiro V; Paim LR; Antunes-Correa LM; Carvalho Sposito A; Matos Souza JR; Modolo R; Nadruz W; Fernandes de Carvalho LS; Coelho-Filho OR · ESC heart failure · 2021
    Cohort study178 participantsHeart Health forPotassium
  7. Long-Term Potassium Monitoring and Dynamics in Heart Failure and Risk of Mortality.
    Núñez J; Bayés-Genís A; Zannad F; Rossignol P; Núñez E; Bodí V; Miñana G; Santas E; Chorro FJ; Mollar A; Carratalá A; Navarro J; Górriz JL; Lupón J; Husser O; Metra M; Sanchis J · Circulation · 2019
    Cohort study2,164 participantsHeart Health forPotassium
  8. Effect of high potassium diet on endothelial function.
    Blanch N; Clifton PM; Petersen KS; Willoughby SR; Keogh JB · Nutrition, metabolism, and cardiovascular diseases : NMCD · 2015
    Randomized trial35 participantsHeart Health forPotassium