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Sport Lemon Lime

Nuun
4.7
★ ★ ★ ★ ★
(1147 ratings)
Sodium 300 mg
Chloride 40 mg
Potassium 150 mg
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Score82
A convenient low-sugar tablet with useful sodium and moderate potassium for routine exercise. It offers less chloride and uses basic forms for its small magnesium and calcium amounts.
How scoring works
Quantity:10 Tablet(s) • (10 servings)
Goals:

Score 82

A convenient low-sugar tablet with useful sodium and moderate potassium for routine exercise. It offers less chloride and uses basic forms for its small magnesium and calcium amounts.
How scoring works
$6.37($0.63 per serving)
iHerb
$ 6.50
Pure Formulas
$ 6.37
Vitacost
$ 6.79
Amazon
$ 7.29
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Analysis

The tablet provides 300 mg sodium and 150 mg potassium, a practical balance for routine exercise and moderate sweat losses. Its 40 mg chloride amount is light, so it is not a complete high-loss replacement formula.

Potassium bicarbonate and potassium chloride provide complementary alkalizing and conventional electrolyte roles. Magnesium oxide and calcium carbonate contribute small amounts in forms that are less favorable for absorption.

The effervescent format is portable, easy to portion, and low in sugar. Its main value is workout hydration; modest potassium and minimal magnesium do not create broad heart-health coverage.

Who is it for
  • Recreational athletes with moderate sweat losses
  • Adults who want a low-sugar electrolyte tablet
  • Users seeking a portable single-serving drink
Best for
  • Routine workouts
  • Warm-weather activity
  • Short-to-moderate endurance sessions

Pros

  • Sodium amount fits routine sweat replacement
  • Potassium includes a soluble bicarbonate source
  • Low sugar per serving
  • Convenient effervescent tablet

Cons

  • Chloride contribution is small
  • Potassium amount is only moderate
  • Magnesium oxide is a weaker form
  • Calcium amount is minimal and uses carbonate

Warnings

  • The 300 mg sodium serving may not fit a sodium-restricted eating plan
  • Supplemental potassium may require guidance with kidney impairment or potassium-retaining medicines
  • Magnesium oxide can cause digestive discomfort in sensitive users

Nutrient quality

84 Highest impact

Useful sodium and well-matched electrolyte salts support routine exercise hydration. Moderate potassium and weak magnesium oxide limit its value for focused mineral repletion.

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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

72 High 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

90 Highest impact

The useful sodium amount and convenient tablet support strong serving value. The focused formula avoids low-value extras.

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Ingredients

IngredientAmount per serving
Calories
15 Calorie(s)
Total Carbohydrates
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 Chloride)
150 mg
Gluten Free Adults 18–50 Kosher Vegetarian
Report overview
C+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

The sodium amount is well aligned with common sweat-replacement needs. The clearly identified functional sodium salts provide better source clarity than an unnamed mineral entry. Its low serving cost provides strong practical value.

B+ Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyB+ Value

The chloride amount offers only modest electrolyte replacement on its own. Potassium chloride is a soluble source, and the effervescent tablet supports rapid ionization after mixing. The cost per serving is reasonable for a convenient drink format.

B Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyC- Value

Bicarbonate and chloride provide complementary alkalizing and electrolyte functions. The moderate potassium amount supports light hydration needs but offers limited depth for a dedicated supplement. Convenient preparation and modest cost make the trade-off reasonable.

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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. 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
  3. 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
  4. Magnesium and Potassium Supplementation for Systolic Blood Pressure Reduction in the General Normotensive Population: A Systematic Review and Subgroup Meta-Analysis for Optimal Dosage and Treatment Length.
    Behers BJ; Behers BM; Stephenson-Moe CA; Vargas IA; Meng Z; Thompson AJ; Melchor J; Wojtas CN; Rosario MA; Baker JF; Deevers AC; Mouratidis RW; Sweeney MJ · Nutrients · 2024
    Meta-analysisHeart Health forPotassium
  5. 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
  6. 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
  7. 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
  8. 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
  9. 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
  10. Finerenone, Serum Potassium, and Clinical Outcomes in Heart Failure With Mildly Reduced or Preserved Ejection Fraction.
    Vardeny O; Vaduganathan M; Claggett BL; Desai AS; Jhund PS; Lam CSP; Senni M; Shah SJ; Voors AA; Zannad F; Pitt B; Matsumoto S; Merkely B; Zieroth S; Yilmaz MB; Lay-Flurrie J; Viswanathan P; Horvat-Broecker A; Scalise A; McMurray JJV; Solomon SD · JAMA cardiology · 2025
    Randomized trial6,001 participantsHeart Health forPotassium