Top 11 Best L-Glutamine Supplements 2018

Best L-Glutamine Supplement

1. BulkSupplements Pure L-Glutamine Powder


Glutamine is one of the most abundant of all of the 20 amino acids, making up over 60% of all skeletal muscle tissue in the body. It can be found in even higher concentrations in more vital organs such as the kidney, liver, heart, and brain. Glutamine is by far the most important of all of the amino acids when it comes to metabolism. It is the main source of fuel used by cells to complete the process of transferring fats, sugars and more into usable energy that the body can store for later. This is because Glutamine can be stored in the body and later converted into glucose, one of the chief energy providers for the body. This is what makes this supplement such an attractive option for high endurance athletes with strict training regimens. It is also used to help the body more effectively burn fat while adding on to overall muscle mass.

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2. Optimum Nutrition Glutamine 1000Mg

Optimum 1000Mg

1,000 MG L-GLUTAMINE Glutamine is the most abundant amino acid in the body, comprising more than 60% of the free amino acid pool in skeletal muscle and greater than 20% of total circulating amino acids. Because supplemental L-Glutamine may help promote muscle recovery after intense exercise, each of their Glutamine 1000 Caps provides 1000 mg of pure L-Glutamine.

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3. Body Fortress 100% Pure Glutamine Powder

Body Fortress

When you train hard, day after day, your body’s natural supply of Glutamine may be depleted – this can happen during times of metabolic stress. That’s why Body Fortress created 100% Pure Glutamine Powder – for heavy lifters and hardcore athletes to replenish their body’s supply of this conditionally essential amino acid. As a supplement, Glutamine helps maximize recovery – plus, it can be used as a cellular fuel,to support protein metabolism, and to help replenish muscle glycogen stores when combined with carbohydrates. Glutamine also promotes bicarbonate production, which can be important for buffering lactic acid produced during intense training. With Body Fortress 100% Pure Glutamine Powder, you know you’re getting the best possible quality Glutamine, in a convenient powder formula that has no artificial colors or flavors.

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4. NOW Foods L-Glutamine 500mg

NOW Foods

Glutamine has recently been the focus of much scientific interest. A growing body of evidence suggests that during certain stressful times, the body may require more Glutamine than it can produce. Under these circumstances Glutamine may be considered a “conditionally essential” amino acid. Glutamine is involved in maintaining a positive nitrogen balance (an anabolic state) and also aids rapidly growing cells (immune system lymphocytes and intestinal cell enterocytes). In addition, Glutamine is a regulator of acid-base balance and a nitrogen transporter.

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5. Jarrow Formulas L-Glutamine Powder, Supports Muscle Tissue

Jarrow Formulas Supports Muscle Tissue

L-Glutamine – the most abundant amino acid in the human body – is involved in many metabolic processes; including the synthesis and protection of muscle tissue; the production of glycogen; and immune support during periods of immune and muscular stress. L-Glutamine is also a major source of fuel for enterocytes (intestinal cells) and hence supports the integrity of the intestinal lining.

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6. AMRAP Nutrition – L-Glutamine Powder

AMRAP Nutrition

AMRAP Nutrition Glutamine is a pharmaceutical-grade l-glutamine powder specifically designed to protect your body from the negative effects of overtraining. Glutamine is the richest amino acid in the body and is involved in many key metabolic processes, including nitrogen metabolism and protein synthesis. Glutamine is recommended for athletes because it helps prevent muscle breakdown and supports development and recovery. AMRAP Nutrition Glutamine is a pure free-form l-glutamine supplement manufactured in the USA with non-GMO ingredients and provided in micronized powder form for easy absorption. It promotes healthy muscle and cellular growth, helps the body synthesize protein more efficiently, strengthens the immune system and supports gut health. Gluten-free, vegetarian, and paleo-friendly.

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7. Nutricost L-Glutamine Powder


Nutricost knows this amino acid is essential to building and repairing of muscle which is why the purest form of L-Glutamine has been produced. Providing 5000mg of L-Glutamine to the body, this formula is able to improve the immune system’s health and provide fuel for the muscle cells to optimize growth and recovery. With an increase of L-Glutamine in the body after high-intensity resistance training, the muscle can be preserved reducing the possibility of muscle catabolism. Provide your body with the purest and most effective recovery supplement so you can get back in to the gym making more gains in no time with L-Glutamine!

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8. Hard Rhino L-Glutamine Powder

Hard Rhino

1000 grams (2.2 lbs), l-glutamine powder with scoop included. Packaged in the USA. In-house lab tested for identity and purity. High quality ingredients at value prices. Fda registered facility.

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9. MET-Rx L-Glutamine Powder


MET-Rx L-Glutamine Powder is an ideal supplement for athletes who push their bodies to the limit. Your body can naturally produce Glutamine – in fact, it’s the most highly concentrated free amino acid in muscle. Glutamine is involved in more metabolic processes than any other amino, and hard training and other times of metabolic stress can decrease your body’s levels of this important amino. MET-Rx L-Glutamine Powder is utilized as cellular fuel, especially in muscles, and supports protein metabolism. L-Glutamine also promotes bicarbonate production, which can be important for buffering lactic acid produced during intense exercise. Recover from your workouts the right way, with MET-Rx L-Glutamine Powder!

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10. Raw Barrel’s – Pure L Glutamine Powder

Raw Barrel’s

This L-Glutamine Powder boosts your protein synthesis to maintain your lean muscle mass while burning fat. The basic equation for this is: Muscle mass = rate of protein synthesis – rate of protein breakdown Therefore the higher your protein synthesis, the higher your lean muscle mass. Not only that, but Glutamine supplements are known to support your immune system and help muscle recovery by buffering lactic acid, as well as supporting gut maintenance. All of which keep you on top athletic form.

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11. NutraBio 100% Pure L-Glutamine Powder

NutraBio 100% Pure

NutraBio uses 100% vegetable based, naturally fermented Ajinomoto pharmaceutical L-Glutamine only! You simply cannot get any better glutamine. They ship from our own FDA registered and inspected GMP manufacturing facility direct to your door. No middlemen to mark up the price and no old or expired product like most resellers ship. This is the freshest and purest Glutamine available – guaranteed.Glutamine is the most abundant amino acid in the body. It plays a crucial role in cell volumizing and has powerful muscle building effects, promoting protein synthesis while inhibiting protein breakdown.

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