You finish a grueling workout, your muscles feel fatigued, and you know you need to support recovery. You want a supplement that helps repair muscle tissue, supports your immune system, and keeps you performing at your best. That is where L-Glutamine comes in. In this review, we examine NOW Sports Glutamine Powder and compare it with top competitors like Nutricost to help you choose the right product for your needs. If you are exploring other amino acid options, check out our guide on the best amino acid supplement on amazon.

1
Best Seller

NOW Sports L-Glutamine Powder, Pure Amino Acid

NOW
9.8 /10
AI Score
AI score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the AI tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more ›
NOW Sports L-Glutamine Powder is a high-quality, pure amino acid supplement designed to support muscle recovery, nitrogen balance, and immune function. Ideal for athletes and active individuals seeking a trusted, GMP-certified product for pre- and post-workout use.
Pros & Cons

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
Detailed Review

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.

2
Editor's Pick

NOW Sports L-Glutamine Powder

NOW
9.8 /10
AI Score
AI score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the AI tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more ›
This L-Glutamine Powder from NOW Sports is a high-purity amino acid supplement that aids nitrogen balance and muscle recovery, ideal for athletes and active individuals seeking post-workout support.
Pros & Cons

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
Detailed Review

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.

3
Limited Time

Nutricost L-Glutamine Powder 1 KG (2.2 Lbs)

Nutricost
9.8 /10
AI Score
AI score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the AI tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more ›
Nutricost L-Glutamine Powder provides 1 kilogram of pure, unflavored L-Glutamine, ideal for muscle recovery and gut health. It is a clean, third-party tested supplement suitable for vegans and those avoiding gluten.
Pros & Cons

Pros

  • High purity L-Glutamine with third-party testing for quality.
  • Large 1 kg container provides excellent value per serving.
  • Unflavored and versatile, easy to add to any drink.
  • Vegan, gluten-free, and non-GMO for dietary compatibility.
  • Manufactured in a certified USA facility ensuring safety.

Cons

  • Unflavored may not appeal to those who prefer flavored supplements.
  • Powder form requires mixing, which may be less convenient than capsules.
  • No scoop included, so measuring servings requires a separate tool.
Detailed Review

Nutricost L-Glutamine Powder is a straightforward, high-purity supplement designed for athletes, fitness enthusiasts, and anyone seeking to support muscle recovery and gut health. This unflavored powder offers 1 kilogram of L-Glutamine, a key amino acid that plays a vital role in protein synthesis and immune function. It is an excellent choice for those who prefer a clean, additive-free product without artificial flavors or fillers.

The standout quality of this product is its purity and third-party testing, which ensures you are getting a reliable dose of L-Glutamine without contaminants. The large 1 kg size provides over 200 servings, making it a cost-effective option for daily use. Users can easily mix it into water, juice, or smoothies, and the unflavored nature means it won't alter the taste of your beverages.

Manufactured in an NSF-Certified, GMP-compliant, and FDA-registered facility in the USA, the product meets high safety and quality standards. Its vegan and gluten-free formulation makes it accessible to a wide range of dietary needs. The powder dissolves reasonably well, though some may find it requires a bit of stirring to avoid clumps.

A potential drawback is the lack of a scoop, so you will need to measure servings with a kitchen scale or teaspoon. Additionally, the unflavored profile may not suit those who enjoy flavored supplements. However, for purists and budget-conscious users, these are minor trade-offs for the value and quality offered.

Overall, Nutricost L-Glutamine Powder is a solid, no-nonsense supplement that delivers on its promise. It is ideal for anyone looking to support their fitness goals or digestive health with a pure, well-tested product. Given its large size and clean formula, it earns a strong recommendation for regular use.

4
Top Rated

NOW Sports Creatine Monohydrate Powder, 2.2 lbs

NOW
9.6 /10
AI Score
AI score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the AI tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more ›
NOW Sports Creatine Monohydrate Powder is a pure, unflavored supplement for athletes seeking clean muscle fuel and mass building support. With GMP certification and no additives, it's ideal for those wanting a trusted, lab-tested creatine.
Pros & Cons

Pros

  • High purity with no unnecessary additives
  • Trusted GMP certification ensures lab-tested quality
  • Supports both muscle energy and lean mass development
  • Good value for a 2.2 lb container
  • Unflavored versatility allows mixing with any drink

Cons

  • Unflavored taste may not appeal to those who prefer flavored creatine
  • Requires consistent loading phase for best results
  • Large tub may be bulky for travel or gym bags
Detailed Review

NOW Sports Creatine Monohydrate Powder is a pure, unflavored supplement designed for athletes and fitness enthusiasts. It provides clean muscle fuel to support energy production and lean mass growth during intense training.

The powder is GMP certified, ensuring rigorous testing for purity and potency. Users can trust that each scoop delivers consistent quality without additives or preservatives. It mixes easily in water or your favorite beverage.

The 2.2 lb tub is practical for regular use, with a screw-on lid to maintain freshness. The unflavored powder is white/cream in color and has a fine texture that dissolves quickly. NOW Foods has been a trusted brand in natural products since 1968.

Some users may find the unflavored taste bland, but it can be masked by mixing with juice or smoothies. As with any creatine, proper hydration and loading phase are recommended for optimal results. The large tub may not be convenient for travel.

Overall, NOW Sports Creatine Monohydrate Powder is a reliable choice for those seeking a pure, lab-tested supplement. Its combination of quality certification, no additives, and value makes it a solid option for supporting athletic performance and muscle growth.

Specifications

Color: White/Cream

Size: 2.2 Pound (Pack of 1)

Dimensions: 5.1 x 5.1 x 6.75 inches

Weight: 2.2 Pounds

Product Group: Drugstore

Binding: Health and Beauty

5

NOW Sports L-Glutamine Powder 6 oz

NOW
9.5 /10
AI Score
AI score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the AI tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more ›
NOW Sports L-Glutamine Powder is a pure amino acid supplement designed to support nitrogen balance, muscle recovery, and immune function. Ideal for athletes and active individuals, this 6 oz powder offers a high-quality, GMP-certified option at an affordable price.
Pros & Cons

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
Detailed Review

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.

Buying Guide

Purity and Ingredients

When choosing a glutamine supplement, purity matters. You want a product free from artificial fillers, additives, and unnecessary ingredients. NOW Sports and Nutricost both offer unflavored, pure L-Glutamine powder with no extra junk. Nutricost emphasizes a clean formula with non-GMO, gluten free, and vegan friendly attributes, making it a solid choice for those with dietary restrictions. NOW Sports products are manufactured in a GMP certified facility, ensuring quality and consistency.

Value and Serving Size

Consider how much product you get per container. Nutricost provides 1 kilogram (2.2 pounds) of powder, offering a large supply for regular use. NOW Sports offers multiple sizes, from a 6 ounce option for trying out the product to a 2.2 pound tub for long term use. Choose based on your frequency of use and budget. For more insights on amino acid supplements, explore our best all in one amino acid supplement picks.

Quality Assurance

Look for brands that prioritize third-party verification and manufacturing standards. NOW Sports holds NPA A-rated GMP certification, meaning their processes are evaluated for stability, potency, and formulation. Nutricost produces its supplements in an NSF certified, GMP compliant, and FDA registered facility in the USA. These certifications give you confidence in the product’s purity and potency.

Flavor and Mixability

Both NOW Sports and Nutricost offer unflavored powders that mix easily in water, juice, or your favorite smoothie. Unflavored options are versatile and allow you to add glutamine to any beverage without altering the taste. If you prefer flavored supplements, consider a BCAA product instead. For a comparison, read our naked BCAA powder review.

Final Thoughts

After reviewing the top glutamine powders, we recommend NOW Sports, L-Glutamine Powder, Amino Acid, 1 lb for its excellent quality, trusted brand reputation, and versatile serving size, making it ideal for daily use. For those seeking a larger supply with a clean, non-GMO formula, Nutricost L-Glutamine Powder 1 KG – Unflavored offers exceptional value and purity, perfect for serious athletes who go through glutamine quickly.

Frequently Asked Questions

What is L-Glutamine good for?

L-Glutamine is an amino acid that supports muscle recovery, immune function, and gut health. It helps maintain a positive nitrogen balance, which is essential for muscle growth and repair after intense exercise. Many athletes use it to reduce muscle soreness and support overall wellness.

How much L-Glutamine should I take per day?

A common dosage is 5 grams taken once or twice daily, depending on your activity level and goals. Start with a smaller amount to assess tolerance, then adjust as needed. Always consult with a healthcare professional before starting any new supplement regimen.

Is L-Glutamine safe to take every day?

Yes, L-Glutamine is generally safe for daily use when taken at recommended doses. It is a naturally occurring amino acid in the body and in many foods. However, if you have any medical conditions or are pregnant or nursing, speak with your doctor first. For more information on amino acids for specific needs, check out our guide on amino acids for healthy aging men.

Can L-Glutamine help with weight loss?

While L-Glutamine is not a weight loss supplement, it may support weight management by preserving lean muscle mass during calorie restriction. Muscle tissue burns more calories than fat, so maintaining muscle can help with metabolism. It is best used as part of a balanced diet and exercise program.

For more resources, visit our Amino Acids category page.