Essential AmiN.O. Energy + Electrolytes Watermelon Splash

Essential AmiN.O. Energy + Electrolytes Watermelon Splash

ON Optimum Nutrition4.6 (18,724 ratings)
Format:Powder Quantity: 10 Ounce(s) · 30 servings
Goals
$19.97 $0.66 per serving

Product analysis

46 out of 100

Essential AmiN.O. Energy + Electrolytes Watermelon Splash may help with short-term alertness and attention through caffeine. Undisclosed blend components make the added amino-acid contribution harder to judge.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality20

The ingredient forms are unspecified, making close comparisons with clearly described alternatives difficult. The unnamed blend components also leave the quality of the mixtures unclear.

Ingredient Transparency50

The listed ingredient and total blend amounts are disclosed, giving a basis for serving comparisons. The forms and individual blend components are unspecified, so the totals do not fully describe the mixtures.

Value For Money56

The serving offers favorable value as a sodium source and reasonable value as a caffeine source. The remaining ingredients give a more mixed or uncertain value picture.

Customer Satisfaction89

Customer ratings are favorable. A very large review pool gives a broad view of buyer satisfaction.

Product Focus36

Caffeine gives the formula its clearest role in alertness and short-term attention. The undisclosed amino-acid amounts leave their additional exercise contribution uncertain.

Format
Powder
Container
10 Ounce(s)
Per serving
$0.66
Customer rating
4.6 · 18,724 ratings
Report analysis

Goals

Energy
Impact
High effect
C Ingredient FitD PathwaysA+ EvidenceA- Formulation Logic
Magnesium · 60 mgCaffeine · 100 mg
Study evidence
Caffeine Supportive 68 studies
Magnesium Supportive 4 studies
Weight Loss
Impact
Moderate effect
C- Ingredient FitF PathwaysC EvidenceA+ Formulation Logic
Magnesium · 60 mgGreen Tea · 50 mgCaffeine · 100 mg
Study evidence
Caffeine Disputed 14 studies
Green Tea Supportive 42 studies
Magnesium Supportive 17 studies
Productivity Boost
Impact
Moderate effect
C- Ingredient FitD- PathwaysB EvidenceA+ Formulation Logic
Magnesium · 60 mgCaffeine · 100 mg
Study evidence
Caffeine Supportive 108 studies
Magnesium Supportive 10 studies
Mental Focus
Impact
High effect
B Ingredient FitC PathwaysB EvidenceA+ Formulation Logic
Magnesium · 60 mgCaffeine · 100 mg
Study evidence
Caffeine Supportive 128 studies
Magnesium Supportive 6 studies
Metabolism Support
Impact
Moderate effect
D+ Ingredient FitF PathwaysC+ EvidenceA- Formulation Logic
Magnesium · 60 mgGreen Tea · 50 mgCaffeine · 100 mg
Study evidence
Caffeine Disputed 40 studies
Green Tea Supportive 31 studies
Magnesium Supportive 61 studies
Taurine Supportive 11 studies
Fitness
Impact
Moderate effect
D+ Ingredient FitD- PathwaysB EvidenceA- Formulation Logic
Magnesium · 60 mgCaffeine · 100 mg
Study evidence
Caffeine Supportive 255 studies
Magnesium Disputed 29 studies
Sodium Supportive 96 studies
Taurine Supportive 21 studies

Ingredients

IngredientAmount per servingScore
Calories
5 Calorie(s)
Total Carbohydrates
1 Gram(s)
Magnesium
60 mg
Chloride
200 mg 68
Sodium
110 mg 49
Amino Blend
5 Gram(s)
Electrolyte Blend
440 mg
Caffeine
100 mg 68
Green Tea leaf extract
50 mg 24
Green Coffee bean extract
10 mg
Adults 18–50 Women
Report overview
Caffeine · 100 mg OverallScore68
D- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyC Value
Essential AmiN.O. Energy + Electrolytes Watermelon Splash has a moderate cost per serving. The stated caffeine amount is 100 mg per serving. No listed secondary stimulants are identified in the available ingredient information.
How this ingredient is rated

Active Ingredient Quality & Bioavailability40

Caffeine is identified, but its specific source or form is unclear in the available information. A form listed only under Other Ingredients cannot be assigned to the caffeine total.
Advanced Bioavailability and Release Profiles
Caffeine is identified, but its specific source or form is unclear in the available information. A form listed only under Other Ingredients cannot be assigned to the caffeine total.

Dose, Safety & Label Transparency100

The stated caffeine amount is 100 mg per serving. No listed secondary stimulants are identified in the available ingredient information.
Caffeine Dose Transparency
The stated caffeine amount is 100 mg per serving.
Dosage Efficacy and Safety Margin
100 mg per serving is a clearly stated caffeine amount.
Secondary Stimulant Disclosure and Risk
No listed secondary stimulants are identified in the available ingredient information.

Value60

The cost per serving is moderate.
Price Per Serving vs. Collection Median
The cost per serving is moderate.
Chloride · 200 mg OverallScore68
C- Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyD+ Value
Essential AmiN.O. Energy + Electrolytes Watermelon Splash provides a meaningful 200 mg of chloride per serving at a moderate cost per serving. Chloride comes from sodium chloride and potassium chloride, but their proportions are unknown.
How this ingredient is rated

Active Ingredient Quality & Bioavailability56

Chloride comes from sodium chloride and potassium chloride, but their proportions are unknown.
Chloride source quality
Chloride comes from sodium chloride and potassium chloride, but their proportions are unknown.

Dose, Safety & Label Transparency90

The serving supplies 200 mg of chloride, a meaningful amount. The amount and both salt sources are listed.
Chloride amount per serving
The serving supplies 200 mg of chloride, a meaningful amount.
Amount and source disclosure
The amount and both salt sources are listed.

Value50

The cost per serving is moderate.
Price per serving
The cost per serving is moderate.
Sodium · 110 mg OverallScore49
D Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyA+ Value
Each serving provides 110 mg sodium at a low whole-product cost per serving. That is a modest amount for replacing sodium lost during intense activity. Sodium Chloride is listed, but its contribution to the sodium total is unclear. The Other Ingredients include an artificial sweetener.
How this ingredient is rated

Active Ingredient Quality & Bioavailability45

Sodium Chloride is listed, but its contribution to the sodium total is unclear. A supporting electrolyte form has limited absorption potential, but its specific form is not stated in the available information.
Sodium Source Purity & Quality
Sodium Chloride is listed, but its contribution to the sodium total is unclear.
Bioavailability of Supporting Electrolytes
A supporting electrolyte form has limited absorption potential, but its specific form is not stated in the available information.
Trace Mineral Complex & Buffering Forms
No trace mineral complex or sodium bicarbonate is identified in the available information.

Dose, Safety & Label Transparency27

Each serving supplies 110 mg sodium, a modest amount for intense activity. The sodium amount is stated, but the potassium amount is unclear. The Other Ingredients include an artificial sweetener.
Sodium Dosage for Athletic Replenishment
The 110 mg sodium per serving is a modest amount for replacing sweat loss during intense activity.
Ingredient Label Transparency
The sodium amount is stated, but the potassium amount is unclear.
Artificial Color and Sweetener Disclosure
The Other Ingredients include an artificial sweetener.

Value100

The whole-product cost per serving is low.
Price Per Serving vs. Collection Median
The whole-product cost per serving is low.
Report alternatives

Sources

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

  1. Cognitive and mood improvements of caffeine in habitual consumers and habitual non-consumers of caffeine.
    Haskell CF; Kennedy DO; Wesnes KA; Scholey AB · Psychopharmacology · 2005
    Randomized trial48 participantsEnergy forCaffeine
  2. Caffeine-containing energy drink improves physical performance of elite rugby players during a simulated match.
    Del Coso J; Ramírez JA; Muñoz G; Portillo J; Gonzalez-Millán C; Muñoz V; Barbero-Álvarez JC; Muñoz-Guerra J · Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme · 2016
    Randomized trial26 participantsEnergy forCaffeine
  3. Differential cognitive effects of energy drink ingredients: caffeine, taurine, and glucose.
    Giles GE; Mahoney CR; Brunyé TT; Gardony AL; Taylor HA; Kanarek RB · Pharmacology, biochemistry, and behavior · 2013
    Randomized trial48 participantsEnergy forCaffeine
  4. Does Single or Combined Caffeine and Taurine Supplementation Improve Athletic and Cognitive Performance without Affecting Fatigue Level in Elite Boxers? A Double-Blind, Placebo-Controlled Study.
    Ozan M; Buzdagli Y; Eyipinar CD; Baygutalp NK; Yüce N; Oget F; Kan E; Baygutalp F · Nutrients · 2022
    Randomized trial20 participantsEnergy forCaffeine
  5. Trait Energy and Fatigue Modify the Effects of Caffeine on Mood, Cognitive and Fine-Motor Task Performance: A Post-Hoc Study.
    Fuller DT; Smith ML; Boolani A · Nutrients · 2021
    Randomized trialEnergy forCaffeine
  6. Magnesium-L-threonate improves sleep quality and daytime functioning in adults with self-reported sleep problems: A randomized controlled trial.
    Hausenblas HA; Lynch T; Hooper S; Shrestha A; Rosendale D; Gu J · Sleep medicine: X · 2025
    Randomized trial80 participantsEnergy forMagnesium
  7. Total magnesium intake and risk of frailty in older women.
    Struijk EA; Fung TT; Bischoff-Ferrari HA; Willett WC; Lopez-Garcia E · Journal of cachexia, sarcopenia and muscle · 2024
    Cohort study81,524 participantsEnergy Fitness forMagnesium
  8. Red blood cell magnesium and chronic fatigue syndrome.
    Cox IM; Campbell MJ; Dowson D · Lancet (London, England) · 1991
    Randomized trial32 participantsEnergy forMagnesium
  9. Exercise, magnesium and immune function.
    Laires MJ; Monteiro C · Magnesium research · 2008
    Narrative reviewEnergy forMagnesium
  10. Effect of caffeine ingestion on cycling performance: a systematic review and meta-analysis.
    Wu J; Xu K; Yin M; Ding X; Wang T; Zhang Q; Wu X; Xiao N · Frontiers in nutrition · 2026
    Meta-analysis226 participants20 studies pooledFitness forCaffeine
  11. Effects of Caffeine Intake on Endurance Running Performance and Time to Exhaustion: A Systematic Review and Meta-Analysis.
    Wang Z; Qiu B; Gao J; Del Coso J · Nutrients · 2023
    Meta-analysis254 participants21 studies pooledFitness forCaffeine
  12. Acute Effects of Caffeine Supplementation on Movement Velocity in Resistance Exercise: A Systematic Review and Meta-analysis.
    Raya-González J; Rendo-Urteaga T; Domínguez R; Castillo D; Rodríguez-Fernández A; Grgic J · Sports medicine (Auckland, N.Z.) · 2021
    Meta-analysis12 studies pooledFitness forCaffeine
  13. Sex Differences in the Ergogenic Response of Acute Caffeine Intake on Muscular Strength, Power and Endurance Performance in Resistance-Trained Individuals: A Randomized Controlled Trial.
    Montalvo-Alonso JJ; Ferragut C; Del Val-Manzano M; Valadés D; Roberts J; Pérez-López A · Nutrients · 2024
    Randomized trial76 participantsFitness forCaffeine
  14. Can I Have My Coffee and Drink It? A Systematic Review and Meta-analysis to Determine Whether Habitual Caffeine Consumption Affects the Ergogenic Effect of Caffeine.
    Carvalho A; Marticorena FM; Grecco BH; Barreto G; Saunders B · Sports medicine (Auckland, N.Z.) · 2022
    Meta-analysis60 studies pooledFitness forCaffeine
  15. Dietary Magnesium May Be Protective for Aging of Bone and Skeletal Muscle in Middle and Younger Older Age Men and Women: Cross-Sectional Findings from the UK Biobank Cohort.
    Welch AA; Skinner J; Hickson M · Nutrients · 2018
    Cross-sectional study156,575 participantsFitness forMagnesium
  16. Dietary Magnesium Is Positively Associated With Skeletal Muscle Power and Indices of Muscle Mass and May Attenuate the Association Between Circulating C-Reactive Protein and Muscle Mass in Women.
    Welch AA; Kelaiditi E; Jennings A; Steves CJ; Spector TD; MacGregor A · Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2016
    Cross-sectional study2,570 participantsFitness forMagnesium
  17. Nutritional intake as a determinant of high-speed resistance and multicomponent training efficacy on strength in older women at risk of sarcopenia. A randomized clinical trial.
    Polo-Ferrero L; Recio-Rodriguez JI; González-Manzano S; Martín-Vallejo J; Barbero-Iglesias FJ; Montero-Errasquín B; Cruz-Jentoft AJ; Méndez-Sánchez R · Clinical nutrition (Edinburgh, Scotland) · 2025
    Randomized trial80 participantsFitness forMagnesium
  18. Minerals and Sarcopenia in Older Adults: An Updated Systematic Review.
    van Dronkelaar C; Fultinga M; Hummel M; Kruizenga H; Weijs PJM; Tieland M · Journal of the American Medical Directors Association · 2023
    Systematic review45 studies pooledFitness forMagnesium
  19. Additive effects of beta-alanine and sodium bicarbonate on upper-body intermittent performance.
    Tobias G; Benatti FB; de Salles Painelli V; Roschel H; Gualano B; Sale C; Harris RC; Lancha AH; Artioli GG · Amino acids · 2013
    Randomized trial37 participantsFitness forSodium
  20. Sodium Hyperhydration Improves Performance With No Change in Thermal and Cardiovascular Strain in Female Cyclists Exercising in the Heat Across the Menstrual Cycle.
    Convit L; Orellana L; Périard JD; Carr AJ; Warmington S; Beaugeois M; Abraham A; Snipe RMJ · International journal of sport nutrition and exercise metabolism · 2025
    Randomized trial12 participantsFitness forSodium