CytoSport Monster Amino

Amino acids are the building blocks of muscle. Make sure your body has all it needs to do the work day in and day out. The unique Branched Chain Amino Acid formula in MONSTER AMINO delivers an 8:1:1 (Leucine to Isoleucine to Valine) ratio. Additionally, Leucine has been shown to activate the mTOR pathway, which stimulates muscle growth†. Available in four flavors to keep you satisfied.

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CytoSport Monster Amino (375g)

Monster Amino is an ultra-concentrated BCAA formula that delivers an 8:1:1 Ratio of Leucine to Isoleucine to Valine.

Monster Amino is able to achieve the anbolic 8:1:1 BCAA ratio by combining PepForm Leucine Peptides and free-form L-Leucine, L-Isoleucine, and L-Valine for maximum muscle-building performance.

University research shows that Leucine enriched beverage consumed with exercise synergistically activates and prolongs activity of the mTOR signaling pathway, which increases muscle anabolic potential (muscle growth). The mTOR pathway is the "trigger" that signals the very genesis of muscle protein synthesis.


  • Full label transparency - no proprietary blends
  • Anabolic 8-1-1 BCAA Ratio to help promote mTOR pathway activation
  • Complete Amino Acid profile. Contains both Essential and Non-Essential Amino Acids
  • PepForm Leucine Peptides for enhanced Leucine bioavailability to trigger muscle protein synthesis
  • Sugar Free
  • No artificial FD&C dyes

Serving Information

  • Container Size: 375g
  • Serving Size: 1 Scoop (12.5g)
  • Servings Per Container: 30

Amounts Per Serving

  • Energy: 10 kcal
    • from Fat: 0
  • Total Fat: 0 g
    • Saturated Fat: 0 g
    • Trans Fat: 0 g
  • Total Carbohydrate: 1 g
  • Dietary Fiber: 0 g
  • Sugars: 0 g
  • Protein: 3 g
  • Vitamin B6 (As Pyridoxal-5-Phosphate): 5 mg
  • Sodium: 70 mg
  • Potassium: 80 mg
  • Monster Amino Matrix: 9 g
    • Leucine Peptides (PepForm™): 3,500 mg
    • L-Leucine: 3,500 mg
    • L-Isoleucine: 500 mg
    • L-Valine: 500 mg
    • Citrulline Malate: 1,000 mg

Typical Amino Acid Profile

  • L-Alanine: 102 mg
  • L-Arginine: 28 mg
  • L-Aspartic Acid: 249 mg
  • L-Cystine: 45 mg
  • L-Glutamine And Precursors: 396 mg
  • L-Glycine: 31 mg
  • L-Histidine: 31 mg
  • L-Isoleucine: 633 mg
  • L-Leucine: 5,127 mg
  • L-Lysine: 182 mg
  • L-Methionine: 38 mg
  • L-Phenylalanine: 59 mg
  • L-Proline: 123 mg
  • L-Serine: 95 mg
  • L-Threonine: 147 mg
  • L-Tryptophan: 42 mg
  • L-Tyrosine: 56 mg
  • L-Valine: 616 mg

Other Ingredients

  • Natural And Artificial Flavor, Citric Acid, Malic Acid, Sodium Citrate, Potassium Citrate, Fruit And Vegetable Extract (Added For Color), Acesulfame Potassium, Sucralose, Carmine (Added For Color), Soy Lecithin

Recommended Use

  • Consume 1 serving immediately post-workout
  • An additional serving can be use anytime during the day as a nitrogen boost