Thorne Amino Complex Clinically-Validated EAA and BCAA Powder for Pre or Post-Workout Promotes Lean Muscle Mass and Energy Production NSF Certified for Sport Berry Flavor 8 Oz 30 Servings
ThorneAnalysis updated August 2026 · How Scout scores
At a glance
Summary
This amino acid supplement features a clean formulation with essential and branched-chain amino acids that support muscle recovery and energy production. The use of natural color from fruit and vegetable juice and a natural sweetener like stevia enhances its ingredient quality. The absence of artificial dyes, sweeteners, and excessive additives contributes to its high score, making it a well-formulated option for athletes and fitness enthusiasts.
Key ingredients 15
L-LeucineVery Good
L-Leucine is a key BCAA that stimulates muscle protein synthesis and promotes muscle growth. It is highly effective in preventing muscle degradation, especially in athletes and during aging. Its role in regulating blood sugar levels adds metabolic benefits.
Benefits
Stimulates muscle protein synthesis, promotes muscle growth, and helps regulate blood sugar levels.
L-CystineGood
L-Cystine is an amino acid that supports protein synthesis and antioxidant activity. It is crucial for the formation of keratin and collagen, contributing to skin and hair health. Its role in glutathione production enhances cellular protection against oxidative stress.
Benefits
Supports protein synthesis and antioxidant activity, contributing to skin and hair health.
L-HistidineGood
L-Histidine is an essential amino acid important for growth and tissue repair. It plays a role in the production of histamine, which is vital for immune response and digestion. Its involvement in myelin sheath formation supports nerve health.
Benefits
Essential for growth, tissue repair, and supports immune response and nerve health.
L-IsoleucineGood
L-Isoleucine is a branched-chain amino acid (BCAA) that aids in muscle recovery and energy production. It is particularly beneficial for athletes as it helps prevent muscle breakdown during exercise. Its role in hemoglobin production supports oxygen transport in the blood.
Benefits
Aids in muscle recovery, energy production, and supports oxygen transport in the blood.
L-LysineGood
L-Lysine is an essential amino acid that supports collagen formation and immune function. It is crucial for calcium absorption and enzyme production. Its antiviral properties can help reduce the frequency of herpes simplex outbreaks.
Benefits
Supports collagen formation, immune function, and has antiviral properties.
L-MethionineGood
L-Methionine is an essential amino acid that aids in detoxification and metabolism. It is a precursor to cysteine and taurine, which are important for liver health and antioxidant defense. Its role in fat metabolism supports weight management.
Benefits
Aids in detoxification, metabolism, and supports liver health and weight management.
L-PhenylalanineGood
L-Phenylalanine is an essential amino acid that is a precursor to neurotransmitters like dopamine and norepinephrine. It supports mood regulation and cognitive function. Its role in the production of tyrosine enhances mental alertness.
Benefits
Supports mood regulation, cognitive function, and enhances mental alertness.
L-ThreonineGood
L-Threonine is an essential amino acid important for protein balance and immune function. It is involved in the formation of collagen and elastin, supporting skin and connective tissue health. Its role in fat metabolism aids in maintaining a healthy liver.
Benefits
Supports protein balance, immune function, and skin and connective tissue health.
L-TryptophanGood
L-Tryptophan is an essential amino acid that is a precursor to serotonin, supporting mood and sleep regulation. It is important for niacin production, which is vital for energy metabolism. Its calming effects can aid in stress reduction.
Benefits
Supports mood and sleep regulation, energy metabolism, and stress reduction.
L-TyrosineGood
L-Tyrosine is a non-essential amino acid that supports neurotransmitter production, enhancing mental performance and alertness. It is beneficial during stress and fatigue as it helps maintain cognitive function. Its role in thyroid hormone production supports metabolic health.
Benefits
Enhances mental performance, supports cognitive function, and metabolic health.
L-ValineGood
L-Valine is a BCAA that supports muscle metabolism and tissue repair. It is essential for maintaining nitrogen balance in the body, which is crucial for muscle growth. Its role in energy provision makes it beneficial for athletes.
Benefits
Supports muscle metabolism, tissue repair, and energy provision.
Citric AcidNeutral
Citric Acid is a natural preservative and flavor enhancer commonly used in food products. It is generally recognized as safe and helps maintain product freshness. Its role in the citric acid cycle is crucial for energy production in cells.
Benefits
Helps maintain product freshness and supports energy production in cells.
Fruit And Vegetable JuiceNeutral
Fruit and Vegetable Juice is used for natural coloring in food products. It is a safer alternative to artificial dyes and is generally considered safe. However, it does not contribute significant nutritional value in small quantities.
Benefits
Provides natural coloring without the use of artificial dyes.
Rebaudioside ANeutral
Rebaudioside A is a steviol glycoside derived from stevia, used as a natural sweetener. It is calorie-free and does not affect blood sugar levels, making it suitable for diabetics. Its natural origin makes it preferable to artificial sweeteners.
Benefits
Calorie-free sweetener suitable for diabetics, derived from a natural source.
FlavorBad
Processed additive flagged under Scout's ingredient doctrine.
Risks
Potential concern for those with allergies or sensitivities due to unspecified composition.
Benefits
Enhances the taste of the product.
Processing
Processed Culinary Ingredients
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