Amino Acids

Optimum Nutrition Amino Acids Review

Updated February 2026 • 4 min read

Optimum Nutrition L-Glutamine Muscle Recovery Capsules, 1000...

Optimum Nutrition L-Glutamine Muscle Recovery Capsules, 1000...

⭐⭐⭐⭐ 4.7/5 (14,812 reviews)
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What Is Optimum Nutrition Amino Acids?

Optimum Nutrition is a renowned brand in the fitness industry, and their L-Glutamine Muscle Recovery Capsules are a popular choice among athletes and fitness enthusiasts. This supplement aims to provide essential amino acid support for muscle recovery, growth, and overall health. Let's dive into the key benefits, usage, and recommendations for this product.

Key Benefits

  1. Rapid Muscle Recovery: Glutamine plays a significant role in muscle protein synthesis and recovery. Optimum Nutrition's L-Glutamine Capsules help replenish glutamine levels in the body, reducing muscle soreness and fatigue after intense exercise.
  2. Enhanced Immune Function: Glutamine supports immune system function, which is crucial for athletes who frequently engage in high-intensity training. This supplement may help reduce the risk of illness and infection.
  3. Improved Gut Health: Glutamine is essential for maintaining a healthy gut microbiome. This supplement may aid in reducing symptoms of irritable bowel syndrome (IBS) and other gastrointestinal issues.
  4. Increased Muscle Mass: Glutamine is involved in the development and growth of muscle tissue. Supplementing with L-Glutamine may help support muscle growth and hypertrophy.

How To Use

Take 2 capsules, containing 1000 milligrams of pure L-Glutamine, 1-2 times a day as needed. It's essential to stay hydrated while taking this supplement. For optimal results, take it after intense exercise or during periods of prolonged physical activity.

Who Should Use This?

This supplement is suitable for athletes, bodybuilders, and individuals engaging in high-intensity exercise or frequent physical activity. It's also beneficial for beginners who want to support their muscle recovery and growth. However, if you're pregnant, breastfeeding, or have any underlying medical conditions, consult with a healthcare professional before using this product.

The Verdict

Optimum Nutrition's L-Glutamine Muscle Recovery Capsules are an excellent addition to any athlete's or fitness enthusiast's supplement regimen. With a 4.7/5 rating from over 14,000 reviews, it's clear that this product delivers on its promises. While it may not be suitable for everyone, it's an excellent option for those looking to support muscle recovery, growth, and overall health.

Product Features

  • 1000 milligram of pure l glutamine per 2 capsules
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • Most abundant amino acid in the body
  • Plays an important role in muscle protein development
  • During prolonged periods of intense exercise, glutamine levels may be depleted

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