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The Original Lemon-Lime Squeeze

XTEND
4.7
★ ★ ★ ★ ★
(15036 ratings)
Valine 1750 mg
Leucine 3500 mg
Isoleucine 1750 mg
Glutamine 2500 mg
Sodium 220 mg
Potassium 200 mg
Product Image
Score76

A practical stimulant-free BCAA and glutamine powder with a large supply. Low citrulline and an opaque electrolyte blend are the main limits.

How scoring works
Quantity:1 Kilogram(s) • (90 servings)
Goals:
Energy
Immunity

Score 76

A practical stimulant-free BCAA and glutamine powder with a large supply. Low citrulline and an opaque electrolyte blend are the main limits.

How scoring works

Also available as

9 options
Smash Apple 14 Gram(s) • 1 kg • 90 servings $44.98 ($0.49 per serving) Strawberry Kiwi Splash 14 Gram(s) • 1 KG(s) • 90 servings $48.28 ($0.53 per serving) Knockout Fruit Punch 13.5 Gram(s) • 1 KG(s) • 90 servings $54.99 ($0.61 per serving) Blue Raspberry Ice 14 Gram(s) • 1 KG(s) • 90 servings $55.24 ($0.61 per serving) Watermelon Explosion 13 Gram(s) • 1 Kilogram(s) • 90 servings $54.99 ($0.61 per serving) Tropic Thunder 14 Gram(s) • 1 Kilogram(s) • 90 servings $57.20 ($0.63 per serving) Mango Madness 14 Gram(s) • 1 Kilogram(s) • 90 servings $57.94 ($0.64 per serving) Glacial Grape 13.5 Gram(s) • 1 Kilogram(s) • 90 servings $64.99 ($0.72 per serving) 420 servings 14 Gram(s) • 420 Gram(s) • 30 servings $27.99 ($0.93 per serving)
$49.60($0.55 per serving)
iHerb
$ 64.99
iHerb
$ 64.99
Amazon
$ 49.60
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Analysis

The powder delivers 3.5 g leucine, 1.75 g isoleucine, 1.75 g valine, and 2.5 g glutamine. Those amounts create a focused amino-acid formula for use around training.

Citrulline malate is only 1 g, below the depth expected from a dedicated pump product. Sodium and potassium are disclosed, but the larger electrolyte blend does not identify its internal components or forms.

The 90-serving supply and absence of listed stimulants support practical routine use. It is better for BCAA and glutamine intake than for heart support, immunity, or a strong citrulline effect.

Who is it for
  • Adults wanting BCAAs and glutamine
  • Stimulant-free workout users
  • People seeking a large serving supply
Best for
  • Intra-workout amino acids
  • Training recovery support
  • Stimulant-free flavored hydration

Pros

  • Provides 7 g total BCAAs
  • Includes 2.5 g glutamine
  • No listed stimulant
  • Large 90-serving supply
  • Discloses sodium and potassium

Cons

  • Only 1 g citrulline malate
  • Electrolyte blend lacks internal detail
  • Mineral forms are unspecified
  • No complete protein

Warnings

  • The 220 mg sodium amount should be considered by people limiting sodium
  • Measure each serving accurately to avoid concentrating electrolytes
  • People with medically restricted amino-acid or protein intake should seek guidance

Nutrient quality

84 Highest impact

Branched-chain amino acids and glutamine are supplied in useful sports-nutrition amounts. Modest electrolytes, underdosed citrulline, and undisclosed mineral forms limit broader performance depth.

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Ingredient transparency

66 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

84 Highest impact

Meaningful amino acids and a large supply provide good quality for the cost. Serving value is strong for a flavored workout formula.

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Report analysis

Goals

Energy
Energy
Impact
High effect
C- Goal FitB Strength of SupportD+ CoverageA- Formula Quality
Potassium · 200 mg

Branched-chain amino acids and electrolytes can support workout fuel and hydration, while glutamine has a recovery role. The formula does not include caffeine, creatine, a meaningful B-vitamin complex, or an adaptogen for broader energy or alertness support.

The main amino-acid amounts are disclosed and the leucine-led ratio is coherent for sports nutrition. Energy benefits are limited to exercise support, and the product is unlikely to change day-to-day fatigue outside a training context.

Immunity
Immunity
Impact
Moderate effect
D- Goal FitC- Strength of SupportD CoverageC+ Formula Quality

Glutamine can support rapidly dividing immune cells and gut-barrier function during high physiological demand. The 2.5 gram amount is clearly disclosed but sits below stronger gut-support ranges.

Branched-chain amino acids, electrolytes, and citrulline make the product primarily a workout drink rather than an immune formula. It does not supply vitamin C, vitamin D, zinc, selenium, or targeted immune botanicals.

Study evidence
Glutamine Supportive 36 studies

Ingredients

IngredientAmount per serving
Calories
0 Calorie(s)
Total Carbohydrates
0 Gram(s)
Vitamin B6 (Pyridoxine Hydrochloride)
 640 mcg
Sodium
220 mg
Potassium
200 mg
L-Leucine
3500 mg
L-Glutamine
2500 mg
L-Isoleucine
1750 mg
L-Valine
1750 mg
Electrolyte Blend
1140 mg
Citrulline Malate
1000 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 is clearly disclosed at 1,750 mg, aligning well with the collection goal. The standard powder format supports convenient drink mixing, though no micronization or sport-specific certification is stated. The cost per gram falls in a moderate range for a flavored amino-acid formula.

View ingredientView products
Leucine · 3500 mg OverallScore83
C Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

The label clearly discloses free-form L-leucine at a full muscle-supporting dose. Source and solubility processing are not specified, while the 14 g scoop is larger than the standard range used for this assessment. Cost efficiency per gram is excellent for the active amount supplied.

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

The clearly disclosed 1,750 mg of free-form L-isoleucine reaches the collection benchmark in a powder serving. The label does not confirm micronization, amino-acid sourcing, or independent testing. A below-median cost per serving supports efficient long-term use.

View ingredientView products
Loading alternative details
79 Performance

The Original Mango Madness

XTEND
The same substantial branched-chain amino and glutamine amounts provide closely matched workout support. It is another flavor and size variant from the same brand, so no meaningful formulation advantage is evident in the supplied data.
78 Performance

The Original Tropic Thunder

XTEND
Branched-chain amino acids, glutamine, and electrolytes closely mirror the original training formula. The supplied pool contains only same-brand variants for this product, and no clear ingredient advantage is shown.
78 Performance

The Original Watermelon Explosion

XTEND
The active pattern matches the original with substantial branched-chain amino acids and glutamine. Citrulline remains underdosed and electrolyte forms remain undisclosed, so the main difference appears to be flavor.
76 Budget

The Original Smash Apple

XTEND
The same branched-chain amino, glutamine, electrolyte, and citrulline pattern is supplied at a lower recurring cost. Sodium and potassium remain modest and the electrolyte forms are still hidden.
79 Budget

The Original Strawberry Kiwi Splash

XTEND
A lower serving cost retains 3,500 mg leucine, 1,750 mg each of isoleucine and valine, and 2,500 mg glutamine. The formula offers essentially the same strengths and limitations, including underdosed citrulline and an opaque electrolyte blend.
78 Budget

The Original Knockout Fruit Punch

XTEND
This is not strictly cheaper per serving, but it is the next closest eligible option after the two lower-cost flavors. The 90-serving format matches the original active pattern, while modest electrolytes and unclear mineral forms remain limitations.
73 Value

Sport Blue Raspberry Ice

XTEND
A smaller serving format retains 7,000 mg total branched-chain amino acids with clearly stated sodium and potassium. It omits glutamine and costs more per serving, so it is not a true value improvement despite a simpler formula.
73 Value

Sport Strawberry Kiwi Splash

XTEND
The formula keeps the same substantial branched-chain amino amounts in a simpler workout hydration powder. It lacks glutamine and is not less expensive, while electrolyte forms remain undisclosed.
78 Value

The Original Mango Madness

XTEND
The same active amounts and a closely related format provide comparable workout support. It is a same-brand variant without a clear cost advantage, included because every eligible candidate comes from XTEND.
Report alternatives

Sources

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

  1. Meta-analysis of Glutamine on Immune Function and Post-Operative Complications of Patients With Colorectal Cancer.
    Yang T; Yan X; Cao Y; Bao T; Li G; Gu S; Xiong K; Xiao T · Frontiers in nutrition · 2021
    Meta-analysis2,201 participants31 studies pooledImmunity forGlutamine
  2. Glutamine granule-supplemented enteral nutrition maintains immunological function in severely burned patients.
    Peng X; Yan H; You Z; Wang P; Wang S · Burns : journal of the International Society for Burn Injuries · 2006
    Randomized trial48 participantsImmunity forGlutamine
  3. Efficacy of Glutamine in Treating Severe Acute Pancreatitis: A Systematic Review and Meta-Analysis.
    Dong S; Zhao Z; Li X; Chen Z; Jiang W; Zhou W · Frontiers in nutrition · 2023
    Meta-analysis1,201 participants30 studies pooledImmunity forGlutamine
  4. Decreased mortality and infectious morbidity in adult burn patients given enteral glutamine supplements: a prospective, controlled, randomized clinical trial.
    Garrel D; Patenaude J; Nedelec B; Samson L; Dorais J; Champoux J; D'Elia M; Bernier J · Critical care medicine · 2003
    Randomized trial45 participantsImmunity forGlutamine
  5. Effect of perioperative glutamine-enriched nutritional support on patients with colorectal cancer: A systematic review and meta-analysis.
    Huang Y; Yang XZ; Qin SH; Zhang T; Xie M; Wang JW · World journal of gastrointestinal surgery · 2026
    Meta-analysis1,643 participants27 studies pooledImmunity forGlutamine
  6. Glutamine administration reduces Gram-negative bacteremia in severely burned patients: a prospective, randomized, double-blind trial versus isonitrogenous control.
    Wischmeyer PE; Lynch J; Liedel J; Wolfson R; Riehm J; Gottlieb L; Kahana M · Critical care medicine · 2001
    Randomized trial26 participantsImmunity forGlutamine