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Sport Blue Raspberry Ice

XTEND
4.6
★ ★ ★ ★ ★
(17026 ratings)
Valine 1750 mg
Isoleucine 1750 mg
Leucine 3500 mg
Sodium 220 mg
Potassium 180 mg
Product Image
Score73

A well-dosed stimulant-free BCAA powder with some electrolytes and no sugar. The hidden electrolyte blend is the main transparency trade-off.

How scoring works
Quantity:345 Gram(s) • (30 servings)
Goals:
Energy

Score 73

A well-dosed stimulant-free BCAA powder with some electrolytes and no sugar. The hidden electrolyte blend is the main transparency trade-off.

How scoring works
$21.99($0.73 per serving)
iHerb
$ 21.99
Amazon
$ 21.99
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Analysis

The powder provides 3.5 g leucine, 1.75 g isoleucine, and 1.75 g valine per serving. That substantial 2:1:1 BCAA profile is the central strength for people using amino acids around training.

Sodium is 220 mg and potassium is 180 mg, with a larger electrolyte blend also listed. The blend's individual ingredients and mineral forms are not disclosed, so hydration quality cannot be fully assessed.

Zero sugar and no listed stimulants suit users who want a flavored intra-workout without caffeine. The formula is less useful for heart support or complete workout nutrition because it lacks protein, carbohydrate fuel, and fully transparent electrolytes.

Who is it for
  • Adults wanting stimulant-free workout amino acids
  • People who prefer a 2:1:1 BCAA ratio
  • Users seeking a sugar-free flavored powder
Best for
  • Intra-workout BCAA intake
  • Training recovery support
  • Stimulant-free flavored hydration

Pros

  • Provides 7 g total BCAAs
  • Clear 2:1:1 amino acid ratio
  • No sugar
  • No listed stimulant
  • Discloses sodium and potassium amounts

Cons

  • Electrolyte blend lacks internal detail
  • Mineral forms are unspecified
  • No complete protein
  • Direct heart support is modest

Warnings

  • The 220 mg sodium amount should be considered by people limiting sodium
  • Measure the powder as directed to avoid concentrating the electrolyte serving
  • People with medically restricted amino-acid or protein intake should seek guidance before use

Nutrient quality

83 Highest impact

Free-form branched-chain amino acids are present in meaningful workout amounts. Undisclosed electrolyte forms and low mineral amounts limit hydration depth and broader health relevance.

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Ingredient transparency

65 High impact

The main amino acids and elemental electrolytes have specific amounts. The electrolyte blend hides component doses, and complete directions, non-active ingredients, and mineral forms are missing.

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Customer satisfaction

72 High impact

The aggregate rating is strong and supported by an extensive feedback volume. Specific experience details are missing, so recurring problems and purpose fit remain uncertain.

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Value for money

75 High impact

Meaningful branched-chain amino acids support fair quality for the cost. Serving value is reasonable for a flavored workout formula.

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Goals

Energy
Impact
High effect
C+ Goal FitB Strength of SupportC CoverageA Formula Quality
Magnesium · 10 mgPotassium · 180 mg

A fully disclosed branched-chain amino acid serving and electrolytes support muscle fuel use and training recovery. The powder is streamlined and provides meaningful amounts of isoleucine and valine within a practical workout formula.

The product contains no caffeine, creatine, CoQ10, adaptogen, or meaningful magnesium amount. Its energy relevance is limited to exercise fuel context rather than alertness, mitochondrial support, or broad fatigue reduction.

Study evidence
Magnesium Supportive 4 studies
Valine Not classified

No linked studies yet.

Ingredients

IngredientAmount per serving
Calories
0 Calorie(s)
Total Carbohydrate
0 Gram(s)
Sugars
0 Gram(s)
Magnesium
10 mg
Sodium
220 mg
Potassium
180 mg
L-Leucine
3500 mg
Electrolyte Blend
1890 mg
L-Isoleucine
1750 mg
L-Valine
1750 mg
Adults 18–50 Sugar Free Women
Report overview
Valine · 1750 mg OverallScore84
B- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB- Value

Free-form L-valine meets the 1750 mg benchmark in a standard workout powder. The individual amount is fully disclosed, though micronization and external sport certification are not stated. Its cost per gram offers good value for a flavored formula with electrolytes.

Isoleucine · 1750 mg OverallScore80
B+ Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyB+ Value

A fully disclosed serving supplies 1,750 mg of isolated L-isoleucine, matching the collection benchmark. The scoopable powder should be practical for mixing, although no micronization, source method, or independent testing is stated. The serving cost provides favorable value for the disclosed dose.

Leucine · 3500 mg OverallScore79
C Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value

L-Leucine is clearly identified, but no fermented, vegan, or branded source is disclosed; the powder has no disclosed processing to improve solubility. The serving reaches the recognized trigger range for muscle protein synthesis; the amount is clearly disclosed, and the scoop is larger than the standard range. Cost per gram of active leucine compares favorably with the collection median.

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Sources

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

  1. Human resting energy expenditure in relation to dietary potassium.
    Dériaz O; Thériault G; Lavallée N; Fournier G; Nadeau A; Bouchard C · The American journal of clinical nutrition · 1991
    Randomized trial8 participantsEnergy forPotassium
  2. [Efficacy of potassium N-acetylaminosuccinate (Cogitum) in the treatment of asthenic syndrome: results of double-blind placebo-controlled trial].
    Esin RG; Khayrullin IK; Esin OR; Fatykhova AF; Gismatullina EI; Isaeva YN · Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova · 2023
    Randomized trial37 participantsEnergy forPotassium
  3. 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
  4. 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
  5. 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
  6. 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
  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
  9. 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
  10. 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 forMagnesium
  11. Red blood cell magnesium and chronic fatigue syndrome.
    Cox IM; Campbell MJ; Dowson D · Lancet (London, England) · 1991
    Randomized trial32 participantsEnergy forMagnesium
  12. Exercise, magnesium and immune function.
    Laires MJ; Monteiro C · Magnesium research · 2008
    Narrative reviewEnergy forMagnesium