After an intense workout, your muscles need proper nutrition to recover and grow. L-glutamine, the most abundant amino acid in the body, plays a vital role in muscle protein synthesis, immune function, and gut health. In this NOW Sports L Glutamine review, we’ll explore the top products from a trusted brand, covering both powder and capsule forms to help you decide which fits your lifestyle.
Whether you’re a dedicated athlete or just starting a fitness journey, NOW Sports offers a range of L-glutamine supplements with verified purity and potency. We’ve evaluated their best-selling options, from the budget-friendly 6-ounce powder to the convenient double-strength capsules. For more on recovery, check out our guide to Top Supplements for Muscle Recovery and Nutrition.
Pros
- High purity with no fillers or artificial ingredients
- GMP certified for consistent quality and safety
- Supports both muscle recovery and immune health
- Easy to mix and consume
- Trusted brand with decades of experience
Cons
- Powder form may require a scoop for accurate dosing
- Some users may prefer capsules for convenience
- Unflavored taste might not appeal to everyone
The NOW Sports L-Glutamine Powder is a pure amino acid supplement designed to support athletic performance and recovery. This 1 lb container provides a concentrated source of L-Glutamine, the most abundant amino acid in the body, which plays a key role in muscle repair, nitrogen transport, and immune function. It is ideal for athletes, bodybuilders, and active individuals looking to enhance their recovery and maintain overall fitness.
One standout feature is its ability to maintain a positive nitrogen balance, which helps offset the stress of intense physical exertion. By regulating the body's pH, it supports homeostasis critical for fitness. The powder also offers immune support, making it a versatile addition to both pre- and post-workout routines. Users can expect improved recovery times and reduced muscle soreness after exercise.
Design and build quality are excellent. The product is GMP Quality Assured with NPA A-rated certification, ensuring every batch is tested for stability, potency, and formulation. Packaged in the USA by a family owned company since 1968, it reflects a commitment to purity and trust. The off white powder mixes easily in water or shakes without clumping, and the container is practical for daily use.
A potential drawback is that the powder form requires a scoop for accurate measurement, which may be less convenient than capsules for some users. Additionally, the unflavored taste is neutral but might not appeal to those who prefer flavored supplements. However, this purity ensures no artificial additives, which is a plus for many.
Overall, the NOW Sports L-Glutamine Powder is a reliable, high quality supplement for anyone seeking to optimize recovery and immune health. Its rigorous testing, trusted brand heritage, and effective formulation make it a solid choice for serious athletes and fitness enthusiasts alike. We highly recommend it for its purity and performance benefits.
Pros
- High purity L-Glutamine from a reputable manufacturer
- Supports both muscle recovery and immune function
- Easy to mix and consume with minimal taste
Cons
- Powder may clump if not stored in a dry environment
- Some users may prefer capsules for convenience over powder
NOW Sports L-Glutamine Powder is a high-quality amino acid supplement designed for athletes and active individuals who want to enhance recovery and support immune health. Each scoop delivers pure L-Glutamine, a key building block for muscle tissue, to help you bounce back faster from intense workouts.
The standout feature is its ability to maintain a positive nitrogen balance, which is crucial for muscle repair and growth. By offsetting stress from physical exertion and regulating body pH, this powder helps your body stay in peak condition during training cycles. Many users report reduced muscle soreness and improved recovery times when using it consistently.
NOW Sports prioritizes quality with GMP certification and rigorous testing for stability and potency. The powder has an off-white color and a neutral taste, making it easy to add to your favorite smoothie or post-workout shake. The 2.2-pound container offers great value for regular use.
One potential drawback is that the powder can clump if exposed to moisture, so proper storage is important. Some athletes might prefer capsules for on-the-go convenience, but the powder format allows flexible dosing and quicker absorption.
Overall, NOW Sports L-Glutamine Powder is a reliable, effective choice for anyone looking to support muscle recovery and immunity. With a strong brand history and commitment to purity, it delivers excellent value for the price. If you are serious about your training and recovery, this supplement is worth adding to your routine.
Pros
- GMP certified for quality and purity
- Versatile powder form easily mixes with beverages
- Supports both muscle recovery and immune function
- Suitable for athletes at all levels
- Family-owned brand with a long-standing reputation
Cons
- Powder form may be less convenient for on-the-go use compared to capsules
- Taste may be unpleasant for some users when mixed with water
- No customer reviews yet, so real-world feedback is limited
NOW Sports L-Glutamine Powder is a pure amino acid supplement designed for athletes and fitness enthusiasts who want to enhance recovery and support overall health. This 6 oz powder provides a convenient way to incorporate glutamine into your daily routine, whether you are a professional athlete or a weekend warrior.
The standout feature is its role as a nitrogen transporter, helping to maintain a positive nitrogen balance crucial for muscle repair and growth. Additionally, it aids in regulating body pH, which can offset the stress of intense physical exertion. Many users find it beneficial for immune support, especially during heavy training periods.
In terms of build quality, NOW Sports ensures high standards with GMP certification, meaning every batch is tested for stability, potency, and formulation. The powder has a fine texture that mixes easily with water or shakes, though its taste is neutral and may not be pleasant for everyone. The packaging is simple and functional, with a resealable lid for freshness.
One potential drawback is the powder format, which may not be as portable as capsules for travel or gym use. Additionally, without customer reviews, there is limited real-world feedback on long-term effectiveness. However, given NOW's reputation and the product's science-backed benefits, it remains a solid choice.
Overall, this L-Glutamine powder offers excellent value for those seeking a pure, high-quality supplement to support muscle recovery and immune function. With its trusted brand and rigorous quality controls, it is a reliable option for any active individual looking to optimize performance.
Pros
- High potency means fewer capsules to swallow per dose.
- Third party GMP certification indicates rigorous quality control.
- Veggie capsules appeal to a wider range of dietary preferences.
- Established brand with a long history of customer trust.
- Good value for the number of servings per bottle.
Cons
- Capsules are larger due to double strength, which may be difficult for some people to swallow.
- Single ingredient supplement; may not be ideal for those seeking a comprehensive amino acid blend.
- No added flavor or mixability enhancements, so not suitable for use in drinks without additional flavoring.
The NOW Sports L-Glutamine 1000 mg Double Strength supplement is a high potency amino acid formula designed to support nitrogen balance and muscle recovery. It is ideal for athletes, bodybuilders, and active individuals who need efficient glutamine replenishment without taking multiple capsules.
What sets this product apart is its double strength concentration, providing 1000 mg of L-Glutamine per capsule. This means you can achieve your desired dosage with fewer swallows, a practical benefit for those who dislike taking many pills. The supplement functions as a key nitrogen transporter, which is essential for maintaining a positive nitrogen balance and supporting muscle tissue repair after intense exercise.
NOW manufactures this product in a GMP certified facility, ensuring every batch is tested for purity, potency, and stability. The company has been a trusted name in natural products since 1968, adding an extra layer of reliability. The capsules are vegetarian friendly, making them suitable for a broader audience.
Potential drawbacks include the capsule size, which is larger than standard due to the higher dose. Some users may find them harder to swallow. Additionally, this is a straightforward single ingredient supplement, so it lacks the added amino acids or flavoring found in some blends.
Overall, the NOW Sports L-Glutamine Double Strength is a well crafted supplement that delivers on its promises. It offers excellent value for those needing a potent, clean, and trusted glutamine source. We recommend it for serious athletes and anyone prioritizing recovery support.
Brand: NOW Sports
Product Name: L-Glutamine 1000 mg Double Strength
Form: Vegetable Capsules
Count: 240 Capsules per bottle
Strength: 1000 mg per capsule
Dimensions: 3.15 x 3.1 x 6.35 inches
Weight: 0.77 lbs (approx.)
Color: White capsule
Certification: GMP (NPA A-rated)
Brand Origin: USA, founded 1968
Pros
- Double strength reduces the number of capsules needed per serving
- Supports muscle recovery and nitrogen balance effectively
- High-quality manufacturing with GMP certification
- Trusted brand with decades of experience in natural supplements
- Vegetarian-friendly veg capsules
Cons
- May cause mild digestive upset in some individuals when taken on empty stomach
- Larger capsule size may be difficult for some to swallow
- Unflavored, so must be taken with a beverage or mixed into food
The NOW Sports L-Glutamine 1000 mg Double Strength capsules are a targeted amino acid supplement designed for athletes and fitness enthusiasts. Each capsule delivers a potent 1000 mg of L-Glutamine, the most abundant amino acid in the body, to support muscle recovery, immune function, and nitrogen balance. This product is ideal for those engaged in intense training, endurance sports, or anyone looking to optimize their post-workout nutrition.
The standout feature is the double strength formulation, which provides twice the L-Glutamine per capsule compared to standard versions. This means fewer capsules to swallow and more efficient dosing. As a nitrogen transporter, L-Glutamine helps maintain a healthy nitrogen balance, which is crucial for muscle protein synthesis and preventing muscle breakdown during stress or exercise. Real-world performance is solid; users report improved recovery times and reduced muscle soreness when taken consistently.
Design and build quality reflect NOW's commitment to excellence. The veg capsules are clean and easy to handle, and the bottle includes a clear label with dosing instructions. The manufacturing process is GMP certified and NPA A-rated, ensuring rigorous testing for potency and purity. The capsules are white and have a neutral taste, making them easy to incorporate into any routine.
One potential drawback is that L-Glutamine can cause mild bloating or gas in sensitive individuals, especially when taken on an empty stomach. Also, the capsules are a bit larger than average, which may be a concern for those with difficulty swallowing pills. Additionally, this supplement is unflavored, so it works best when mixed with a beverage or smoothie rather than taken alone.
Overall, the NOW Sports L-Glutamine Double Strength is an excellent choice for athletes seeking a high-potency, clean amino acid supplement. It delivers on its promise of supporting nitrogen balance and muscle recovery, backed by a trusted brand with rigorous quality standards. For the price and potency, it offers great value for anyone serious about their fitness goals.
Buying Guide for NOW Sports L-Glutamine
Powder vs Capsules: Which Form Suits You?
The most significant choice is between a powder you can mix into your favorite shake and a capsule that you can swallow quickly. NOW Sports offers both. Powders, like the 1 lb and 2.2 lb containers, give you the freedom to adjust your serving size, making them ideal for those who follow a flexible dosing regimen. Capsules, on the other hand, provide a consistent dose without any preparation, perfect for busy schedules.
Your lifestyle should dictate your pick. If you typically train at home or have a blender handy, a powder may be the most convenient. For travel, office, or gym locker, capsules are discreet and easy to carry. Consider how you plan to incorporate L-glutamine into your daily routine. For a deeper look at muscle preservation as you age, our guide on muscle support for longevity offers valuable insights.
Dosage and Strength: Matching Your Needs
NOW provides a range of dosages to cater to different goals. The standard powders deliver about 5 grams per scoop, while the Double Strength capsules pack 1,000 mg per capsule, doubling the typical 500 mg. This means you can reach higher daily targets with fewer pills, which is a huge convenience for athletes who need larger doses. The 6-ounce powder is a smaller container, ideal for trying out the supplement before committing to a larger size.
When deciding on dosage, think about your training intensity and recovery needs. Beginners might start with a moderate dose and adjust upward. For active individuals, higher intakes may support better muscle repair. Our article on muscle support for healthy aging men discusses how amino acids like glutamine can be part of a proactive health plan.
Quality and Purity: Non-Negotiable Standards
When choosing a supplement, purity is paramount. NOW Sports products are rigorously evaluated by third-party labs to ensure they meet label claims and are free from harmful contaminants. Their manufacturing facilities are GMP certified, guaranteeing that every batch is consistent and potent. This is especially critical for amino acids, which can degrade if exposed to improper handling.
We appreciate that NOW provides detailed certificates of analysis on request, adding an extra layer of transparency. If you are comparing brands, keep an eye out for similar certifications. For insights on other high-quality amino acid supplements, our life extension taurine review highlights a similarly rigorous approach.
Brand Trust: Why NOW Stands Out
NOW has been a family-owned company since 1968, earning a reputation for affordable, reliable supplements. Their L-glutamine is derived through fermentation, and the final product is free from common allergens like gluten and soy. This makes it suitable for a wide range of users, even those with dietary restrictions.
Beyond L-glutamine, NOW Sports offers a comprehensive line of amino acids and recovery aids. Their Taurine 1,000 mg, for instance, is another popular choice for athletes. To learn more about this sibling product, read our NOW taurine 1000mg review.
Final Thoughts
After reviewing the top NOW Sports L-Glutamine options, our recommendation is clear. For most athletes seeking a versatile and economical addition to their supplement stack, the NOW Sports, L-Glutamine Powder, Amino Acid, 1 lb is an excellent choice, offering pure powder that mixes easily. If you prefer the convenience of capsules or need higher doses on the go, the NOW Sports, L-Glutamine 1,000 mg, Double Strength delivers 1,000 mg per capsule, perfect for busy lifestyles. Both options maintain the trusted NOW quality you expect.
Frequently Asked Questions
What is L-glutamine good for?
L-glutamine is a conditionally essential amino acid that supports muscle recovery, immune function, and gut health. It helps maintain a positive nitrogen balance, which is crucial for muscle growth and repair after intense training. Many athletes supplement with it to reduce muscle soreness and improve recovery time.
How much L-glutamine should I take daily?
The typical recommended dose ranges from 5 to 10 grams per day, split into pre- and post-workout doses. Some athletes take up to 20 grams during intense training periods. Start with a lower dose and gradually increase to assess your tolerance. The powder form makes it easy to measure, while capsules offer a fixed 1,000 mg per serving.
Is NOW Sports L-Glutamine powder or capsules better?
Both forms are effective; the best choice depends on your routine. Powder is more flexible and often more cost-efficient, while capsules offer convenience and precise dosing. If you mix shakes at home, powder is great; if you travel often, capsules are more practical. For a comparison of other supplements, see our pure encapsulations taurine review.
Are there any side effects of L-glutamine?
L-glutamine is generally well-tolerated at recommended doses. Some people may experience mild digestive upset, especially when starting. It’s always wise to consult with a healthcare professional before adding any supplement, particularly if you have kidney or liver conditions. In 2026, the consensus remains that it is safe for most adults.
