GNC Pro Performance Amino

Common questions

Is GNC Pro Performance Amino healthy?

GNC Pro Performance Amino scores 71/100 on Scout's independent analysis of ingredients, additives, and lab results — a fair-to-good score — solid, with tradeoffs. This amino acid supplement contains beneficial ingredients such as essential amino acids and L-Carnitine, which support muscle growth and energy production.

How processed is GNC Pro Performance Amino?

GNC Pro Performance Amino is NOVA Group 3: Processed Foods.

Which ingredients drive GNC Pro Performance Amino's score?

In Scout's ingredient-by-ingredient analysis, L-Valine, Micronized L-Valine, Micronized Lysine count in its favor; Liquid Soy Lecithin, Natural Flavors are flagged as ingredients of concern. The full breakdown, with why each one matters, is in the Key ingredients section on this page.

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GNC Pro Performance Amino

Bioengineered
71 Good

Analysis updated July 2026 · How Scout scores

$34.99 · 16.3 oz · 30 servings · $2.19 / ounce
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At a glance

Beneficial ingredients 11
Harmful ingredients 2
Category Amino Acids
Summary

This amino acid supplement contains beneficial ingredients such as essential amino acids and L-Carnitine, which support muscle growth and energy production. The use of micronized forms enhances absorption and effectiveness. However, the presence of liquid soy lecithin, which can be derived from genetically modified soy and may cause allergic reactions, slightly detracts from the overall ingredient quality.

Key ingredients 19

L-Valine
Good

L-Valine is an essential amino acid important for muscle growth and tissue repair. It is often used in supplements to enhance athletic performance and recovery. As an essential amino acid, it must be obtained through diet or supplementation.

Benefits

Supports muscle metabolism and tissue repair, making it beneficial for athletes.

See more about L-Valine →
Micronized L-Valine
Good

Micronized L-Valine is a form of L-Valine that is processed to enhance absorption and bioavailability. This form allows for quicker uptake by the body, which can be beneficial during workouts. The micronization process does not alter the amino acid's fundamental properties.

Benefits

Improved absorption and bioavailability can enhance its effectiveness in muscle recovery.

Micronized Lysine
Good

Micronized Lysine is an essential amino acid that plays a role in protein synthesis and hormone production. The micronization process improves its solubility and absorption. It is crucial for collagen formation and immune function.

Benefits

Supports collagen production and immune health, enhancing overall well-being.

Micronized Threonine
Good

Micronized Threonine is an essential amino acid important for protein balance and immune function. The micronization enhances its absorption, making it more effective. It is vital for the formation of connective tissues and skin.

Benefits

Essential for protein synthesis and supports immune and digestive health.

Micronized Phenylalanine
Good

Micronized Phenylalanine is an essential amino acid that is a precursor to neurotransmitters like dopamine. The micronization process enhances its absorption and effectiveness. It plays a role in mood regulation and cognitive function.

Benefits

Supports neurotransmitter production, which can improve mood and cognitive function.

L-Carnitine
Good

L-Carnitine is a compound involved in energy production by transporting fatty acids into mitochondria. It is often used to enhance athletic performance and support weight loss. It is naturally found in animal products and is beneficial for energy metabolism.

Benefits

Supports energy production and may aid in weight management.

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L-Leucine
Good

L-Leucine is a branched-chain amino acid (BCAA) crucial for muscle protein synthesis. It is one of the most important amino acids for muscle growth and repair. It is often used in supplements to enhance muscle recovery and performance.

Benefits

Promotes muscle growth and aids in recovery, making it beneficial for athletes.

See more about L-Leucine →
L-Isoleucine
Good

L-Isoleucine is a BCAA that plays a role in muscle metabolism and energy production. It is essential for muscle repair and growth, especially during physical activity. It also helps regulate blood sugar levels.

Benefits

Supports muscle repair and energy production, beneficial for active individuals.

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Vitamin E
Good

Vitamin E is a fat-soluble antioxidant that protects cells from oxidative damage. It supports immune function and skin health. It is commonly included in supplements for its protective properties against free radicals.

Benefits

Acts as an antioxidant, supporting immune health and protecting cells from damage.

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Potassium
Good

Potassium is a vital electrolyte that helps maintain fluid balance and supports muscle and nerve function. It is crucial for cardiovascular health and preventing muscle cramps. Adequate potassium intake is important for overall health.

Benefits

Supports cardiovascular health and helps prevent muscle cramps.

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Magnesium
Good

Magnesium is an essential mineral involved in over 300 biochemical reactions in the body. It supports muscle and nerve function, bone health, and energy production. It is often included in supplements for its role in reducing muscle cramps and fatigue.

Benefits

Supports muscle and nerve function, and is essential for energy production.

See more about Magnesium →
Sodium
Neutral

Sodium is an essential electrolyte important for fluid balance and nerve function. It is necessary for muscle contractions and maintaining hydration. While essential, excessive intake can lead to health issues like hypertension.

Risks

Excessive sodium intake can lead to high blood pressure and cardiovascular issues.

Benefits

Essential for maintaining fluid balance and proper muscle function.

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Chloride
Neutral

Chloride is an essential electrolyte that helps maintain fluid balance and is a component of stomach acid. It is necessary for proper digestion and maintaining acid-base balance. While essential, it is typically consumed in adequate amounts through diet.

Benefits

Essential for maintaining fluid balance and proper digestion.

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Citric Acid
Neutral

Citric acid is a natural preservative and flavor enhancer found in citrus fruits. It is used to add acidity and improve flavor stability. It is generally recognized as safe when consumed in typical amounts.

Benefits

Acts as a preservative and enhances flavor stability.

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Malic Acid
Neutral

Malic acid is a naturally occurring acid found in fruits, used to enhance flavor and tartness. It is commonly used in food and supplements for its sour taste. It is generally recognized as safe when consumed in typical amounts.

Benefits

Enhances flavor and provides a tart taste.

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Stevia Leaf Extract
Neutral

Stevia leaf extract is a natural sweetener derived from the leaves of the Stevia plant. It provides sweetness without calories and is considered safe for consumption. It is a popular alternative to artificial sweeteners.

Benefits

Provides sweetness without adding calories, making it suitable for calorie-conscious individuals.

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Silica
Neutral

Silica is used as an anti-caking agent in supplements to prevent clumping. It is naturally found in the earth's crust and is considered safe for consumption. It does not contribute any nutritional value.

Benefits

Prevents clumping in powdered supplements, ensuring consistent texture.

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Liquid Soy Lecithin
Bad

Liquid Soy Lecithin is used as an emulsifier in supplements and foods. It is derived from soy, which may be genetically modified and can cause allergic reactions in some individuals. While it helps in mixing ingredients, it is not considered a high-quality ingredient.

Risks

Potential allergen and may contain genetically modified organisms (GMOs).

Natural Flavors
Bad

Umbrella term that can hide dozens of undisclosed synthetic constituents.

Risks

Potential lack of transparency in ingredient sourcing and processing.

Benefits

Enhances flavor without adding calories or artificial ingredients.

See more about Natural Flavors →

Processing

Group 3 · Processed

Processed Foods

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