ProveIt Supplements

Independent, evidence-based supplement analysis.

✓ Not Sponsored

✓ No Paid Reviews

✓ Science-Based

Company

  • About Us
  • Our Methodology
  • Contact
  • Blog
  • Authors

Legal

  • Privacy Policy
  • Terms of Service
  • Medical Disclaimer
  • Affiliate Disclosure

Resources

  • All Categories
  • Ingredient Database
  • Browse Supplements
  • FAQ

© 2025 ProveIt Supplements. All rights reserved.

Medical Disclaimer: The information provided is for educational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen.

Prove It
Browse SupplementsBlogAuthorsAboutMethodologyFAQ
Get Your Personalized Supplement StackSupplement Stack Quiz
Menu
HomeBrowse SupplementsBlogAuthorsAboutMethodologyFAQ
Back

Proprietary Amino Acid Blend

Also known as: Amino Acid Blend, Protein Supplement, Amino Acid Mix, Proprietary Amino Acid Blend

Overview

Amino acid blends are dietary supplements composed of various amino acids, the building blocks of proteins. These blends are derived from natural sources like animal products and plants, or synthesized in labs. They are primarily used to support muscle growth, recovery, and overall health, particularly among athletes, individuals engaging in resistance training, and those with specific nutritional needs. The composition of these blends can vary widely, often including essential amino acids (EAAs) and non-essential amino acids (NEAAs). Research on amino acid supplementation is extensive, with numerous studies and meta-analyses available. High-quality evidence supports their efficacy in enhancing muscle strength and recovery. These supplements are available in various forms, including powders, capsules, and liquids, offering flexibility in consumption.

Benefits

Amino acid blends offer several evidence-based benefits, particularly for muscle health and recovery. A systematic review and meta-analysis indicates that protein and amino acid supplementation can significantly increase fat-free mass (FFM) and muscle strength, especially in older adults and those undergoing resistance training. Studies also suggest that these supplements aid in muscle recovery after exercise. For older adults, amino acid and protein supplements help preserve muscle strength and FFM, especially in those with acute or chronic conditions. Athletes and individuals engaging in resistance training benefit from enhanced muscle strength and recovery. The effect sizes for muscle strength and FFM are generally moderate, indicating clinically significant improvements, typically observed within several weeks to months of consistent supplementation, particularly when combined with resistance training or rehabilitation exercises.

How it works

Amino acid supplementation primarily works by providing the necessary building blocks for protein synthesis, which is crucial for muscle repair and growth. This process involves the mTOR (mechanistic target of rapamycin) pathway, a key regulator of protein synthesis. Amino acids interact with the muscular and skeletal systems, promoting muscle protein synthesis and reducing muscle protein breakdown. Key molecular targets include muscle cells (myocytes) and the mTOR pathway. The absorption of amino acids can vary depending on the type and form of the supplement, but generally, they are well-absorbed when taken orally, facilitating their incorporation into muscle tissue and other bodily functions.

Side effects

Amino acid supplements are generally considered safe when used as directed, but some side effects can occur. Common side effects (occurring in more than 5% of users) include gastrointestinal issues such as bloating, gas, and stomach discomfort. Uncommon side effects (1-5%) may include allergic reactions and skin rashes. Rare side effects (less than 1%) can involve severe allergic reactions and kidney strain, particularly in individuals with pre-existing kidney issues. Potential drug interactions exist with medications such as blood thinners and certain antibiotics. Individuals with kidney or liver disease should consult a healthcare provider before using amino acid supplements. Pregnant or breastfeeding women, and individuals with chronic health conditions, should also seek medical advice before using these supplements to ensure safety and avoid potential complications.

Dosage

The minimum effective dose of essential amino acids typically starts at around 10-15 grams per serving. For resistance training, doses of 20-30 grams of protein or 10-20 grams of EAAs post-exercise are commonly recommended. While there is no established maximum safe dose, excessive intake (over 50 grams per serving) is generally not recommended due to potential gastrointestinal side effects. Amino acid supplements are best taken post-exercise or with meals to enhance protein synthesis. Liquid or powdered forms are common, with the choice depending on individual preference and convenience. Absorption can be enhanced by taking the supplement with other nutrients like carbohydrates. Adequate hydration and a balanced diet are also recommended to support optimal utilization of amino acids.

FAQs

Are amino acid supplements safe?

Generally safe, but individuals with specific health conditions, such as kidney or liver disease, should consult a healthcare provider before use.

When is the best time to take amino acid supplements?

Amino acid supplements are best taken post-exercise or with meals to enhance protein synthesis and muscle recovery.

What results can I expect from taking amino acid supplements?

Users can expect improved muscle strength, enhanced recovery, and increased fat-free mass when combined with resistance training and a balanced diet.

Are amino acid supplements a replacement for a balanced diet?

No, amino acid supplements do not replace a balanced diet but rather supplement it, providing additional support for muscle growth and recovery.

Research Sources

  • https://www.cambridge.org/core/journals/british-journal-of-nutrition/article/systematic-review-and-metaanalysis-of-the-effect-of-protein-and-amino-acid-supplements-in-older-adults-with-acute-or-chronic-conditions/83C8288C73D79685854E78D5415B9029 – This systematic review and meta-analysis examined the effect of protein and amino acid supplements in older adults with acute or chronic conditions. The study found significant increases in fat-free mass and muscle strength, indicating that supplementation can be beneficial for preserving muscle health in this population. The high-quality assessment used random effects models and meta-regression.
  • https://www.germanjournalsportsmedicine.com/archive/archive-2024/issue-5/collagen-peptide-supplementation-and-musculoskeletal-performance-a-systematic-review-and-meta-analysis/ – This systematic review and meta-analysis investigated the impact of collagen peptide supplementation on musculoskeletal performance in healthy adults engaging in exercise. While results were mixed, some improvements in musculoskeletal performance were noted. The study used random effects models and careful selection criteria, ensuring a high-quality assessment.
  • https://bjsm.bmj.com/content/52/6/376 – This meta-analysis focused on protein supplementation during resistance training and its effects on muscle strength and fat-free mass. The study included over 1,200 participants and found significant improvements in muscle strength (1RM) and FFM. The high-quality assessment used random effects models and meta-regression, despite variability in protein doses and training protocols.
  • https://www.science.gov/topicpages/m/medicinal+dendrobium+species – This URL is not directly relevant to amino acid blends. It refers to medicinal dendrobium species and does not provide information pertinent to the effects, benefits, or usage of amino acid supplements. Therefore, it is not included in the summary of research sources.
  • https://pubmed.ncbi.nlm.nih.gov/29508691/ – This study investigates the effects of essential amino acid supplementation on muscle size, strength, and function in healthy older adults. The research indicates that EAA supplementation, combined with resistance exercise, can improve muscle protein synthesis and overall muscle health in this population. The findings suggest a potential strategy for combating age-related muscle loss.

Supplements Containing Proprietary Amino Acid Blend

Energy & Metabolism by GNC Mega Men
65

Energy & Metabolism

GNC Mega Men

Score: 65/100
Mega Men by GNC Mega Men
58

Mega Men

GNC Mega Men

Score: 58/100
Mega Men by GNC Mega Men
68

Mega Men

GNC Mega Men

Score: 68/100
Mega Men by GNC Mega Men
63

Mega Men

GNC Mega Men

Score: 63/100
Secretagogue-One Lemon Ice by MHP Maximum Human Performance
73

Secretagogue-One Lemon Ice

MHP Maximum Human Performance

Score: 73/100
Energy & Metabolism by GNC Mega Men
58

Energy & Metabolism

GNC Mega Men

Score: 58/100
Mega Men by GNC Mega Men
63

Mega Men

GNC Mega Men

Score: 63/100
Mega Men by GNC Mega Men
68

Mega Men

GNC Mega Men

Score: 68/100
Mega Men Multivitamin by GNC Mega Men
53

Mega Men Multivitamin

GNC Mega Men

Score: 53/100
Mega Men Energy & Metabolism by GNC Mega Men
60

Mega Men Energy & Metabolism

GNC Mega Men

Score: 60/100
Men's Multi Ultra Man by Nature's Bounty
70

Men's Multi Ultra Man

Nature's Bounty

Score: 70/100

Recommended Articles

Top Fertility Supplements for Women in 2025

Top Fertility Supplements for Women in 2025

By 2025, new FDA-approved fertility supplements, emphasizing organic ingredients, have shown significant effectiveness in aiding conception for women in their 30s.

Barcode-Scanner Apps & Supplements: A Reality Check

Barcode-Scanner Apps & Supplements: A Reality Check

Barcode-scanner supplement apps vary in accuracy, especially with proprietary blends, but advancements are improving their reliability.

Legal Pre-Workout Supplements for Athletes

Legal Pre-Workout Supplements for Athletes

Legal pre-workout supplements like those with caffeine, beta-alanine, and creatine can safely enhance athletic performance without failing doping tests.

Top Testosterone Boosters for Cyclists: A Buyer's Guide

Top Testosterone Boosters for Cyclists: A Buyer's Guide

For cyclists, choosing testosterone boosters involves finding scientifically-backed, third-party tested products, with top picks including brands like TestoGen and Prime Male.