Top Glutamine Brands for Optimal Recovery and Health Boost

Glutamine, an essential amino acid, plays a crucial role in supporting muscle recovery and boosting the immune system, making it a popular supplement choice among fitness enthusiasts and athletes. With a myriad of brands on the market, finding the right glutamine supplement might seem daunting. By considering factors such as quality, purity, and customer reviews, you can make an informed choice that best suits your needs. Below, we explore some of the top brands renowned for their effectiveness and trustworthiness in the glutamine supplement industry.

Illustration of glutamine

Best brands of glutamine in 2025

Optimum Nutrition

Optimum Nutrition is renowned as one of the leading producers of glutamine supplements, offering high-quality products that support muscle recovery and overall health. Their glutamine powder contains 5 grams of pure L-Glutamine per serving, which is essential for muscle recovery and protein synthesis, especially after intense exercise. Glutamine comprises more than 60% of the free amino acid pool in skeletal muscle and over 20% of total circulating amino acids, making it a crucial supplement for athletes and health-conscious individuals. Optimum Nutrition's glutamine powder is instantized, mixes easily, and is certified by Informed Choice, ensuring it is free from banned substances. This product is part of a broader market that is expected to grow significantly, with the global glutamine market projected to reach USD 178.81 million by 2032.

NOW Sports

NOW Sports, a brand under NOW Foods, is renowned for producing high-quality glutamine supplements, particularly their L-Glutamine Powder, which is 100% pure and free-form. This product supports muscle growth, aids immune and intestinal health, and helps maintain acid-base balance, making it a favorite among athletes and fitness enthusiasts. Since its first availability in 2007, NOW Sports L-Glutamine Powder has been a staple in the sports nutrition market. The product is vegan, kosher, non-GMO, and GMP quality assured, ensuring it meets stringent standards. With a growing market expected to reach USD 181.64 million by 2030, NOW Sports remains a leading provider of glutamine supplements.

MuscleTech

MuscleTech is a leading brand in the glutamine market, with its Platinum 100% Glutamine product being highly demanded for its benefits in muscle recovery and reducing soreness after workouts. L-glutamine, which dominates the market with an 83% share, is a key component of MuscleTech's formula, helping to replenish the up to 50% of glutamine stores lost during intense exercise. This product is HPLC-tested and verified, ensuring it is pure and effective. MuscleTech's glutamine supplements are particularly popular in muscle-building applications, which account for 36% of the market share. The global glutamine market, led by MuscleTech's products, is projected to grow significantly, with the market size expected to reach USD 185.16 million by 2034.

BSN

BSN, a renowned brand in the supplement industry, is highly regarded for its high-quality glutamine products, which are part of their versatile DNA Series. This series allows users to customize their supplement intake, with glutamine being a core ingredient alongside whey protein, creatine, and BCAAs. The market for glutamine, driven by health consciousness and sports nutrition, is projected to grow significantly, with L-glutamine accounting for 63% of the market revenue share in 2023. BSN's products are designed to support muscle recovery, gut health, and immune function, aligning with the growing demand for glutamine supplements. The global glutamine market, which includes BSN's offerings, is expected to reach USD 199 million by 2034, growing at a CAGR of 3.6%.

Thorne Research

Thorne Research is a leading producer of high-quality glutamine supplements, recognized for their commitment to purity and effectiveness. Their L-Glutamine product, available in both capsule and powder forms, is designed to support gut health, immune function, and overall well-being, with each capsule containing 500mg of L-glutamine. This product is gluten-free, soy-free, and dairy-free, making it accessible to a wide range of consumers. Thorne Research's L-Glutamine is also endorsed for its role in muscle recovery and wound healing, particularly beneficial for individuals undergoing metabolic stress. The brand's focus on clean labels and transparent sourcing aligns with the growing demand for health-conscious products. Learn more about their L-Glutamine Powder.

Jarrow Formulas

Jarrow Formulas is a leading producer of L-Glutamine, renowned for its high-quality and scientifically-backed products. Manufactured through microbial fermentation, Jarrow Formulas' L-Glutamine supports muscle tissue synthesis, glycogen production, and immune function, particularly during periods of stress. With a commitment to superior science, the company ensures purity and potency in every product, adhering to Current Good Manufacturing Practices (cGMP). Jarrow Formulas' L-Glutamine is available in various forms, including 750mg veggie capsules and 1000mg easy-solv tablets, catering to different consumer needs. The brand's dedication to research and quality has established it as a trusted name in the health supplement industry.

Garden of Life

Garden of Life is renowned for its high-quality, science-based supplements, including those containing glutamine, which are formulated with traceable, whole food ingredients. Their products are certified by reputable third parties, such as NSF Certified Gluten Free, Non-GMO Project Verified, and certified kosher, ensuring they meet stringent standards. Garden of Life's commitment to cleanliness and sustainability is evident in their carbon-neutral operations and use of organic plant materials. Their supplements, including those with glutamine, are free from artificial ingredients, fillers, and common allergens like dairy, soy, and nuts. With a wide range of products available, Garden of Life caters to various nutritional needs, including digestive health and immune support. For more details, explore their official website.

Bodybuilding.com Signature

Bodybuilding.com Signature Series is renowned for its high-quality supplements, including glutamine, which is part of their comprehensive line of commodities. Launched in January 2018, this series offers transparent, filler-free, and research-backed ingredients, ensuring effective doses that deliver results. The Signature Series glutamine, like other commodities in the line, is available at affordable pricing without compromising on quality. This brand is trusted for its commitment to transparency and effectiveness, making it a top choice for fitness enthusiasts. With the option to purchase on both Bodybuilding.com and Amazon.com, accessibility is enhanced.

NutraBio

NutraBio is renowned as one of the best producers of glutamine, offering 100% pure, fermented L-glutamine that supports enhanced recovery, robust immune function, and muscle growth. Their products are manufactured in the USA under stringent quality controls, ensuring the highest standards of purity and safety. NutraBio's commitment to transparency is evident through their third-party lab testing and full label transparency. The global glutamine market, which was valued at USD 136.8 million in 2024, with North America holding over 40% of the market share, underscores the demand for high-quality glutamine supplements like those provided by NutraBio. For more information, visit their NutraBio Glutamine product page.

BulkSupplements

BulkSupplements is recognized as one of the top producers of glutamine, offering high-quality L-Glutamine powder and capsules that are free from added sugar, dairy, yeast, soy, gluten, and other additives. Their products are designed to support muscle recovery, immune system function, and gut health, making them a favorite among athletes and health enthusiasts. The L-Glutamine from BulkSupplements is involved in crucial bodily functions such as muscle protein synthesis, neurotransmitter production, and wound healing. With a focus on purity and effectiveness, BulkSupplements ensures that their glutamine products are made from the biologically active form of glutamine, which is the most abundant amino acid in the body. This commitment to quality has made BulkSupplements a trusted name in the supplement industry.