Buy L-Glutamine

You want to buy L-glutamine and are looking for a high-quality glutamine supplement in powder or capsule form? Then you've come to the right place. In our range you will find L-glutamine from top brands such as GN Laboratories, Olimp, Peak and Scitec Nutrition, whether as a fine powder for mixing or as practical capsules for on the go.

It is the most abundant amino acid in the human body and is particularly valued by athletes during intensive training phases. On this page you can find out everything you need to know about its effects, intake and dosage and find the right product for your training.

What is L-glutamine? The most important amino acid in the human body

L-glutamine is a semi-essential amino acid that the body can produce itself, but not always in sufficient quantities. Especially during intensive training, stress or after injuries, the requirement increases significantly. In such phases, the body's own production is often insufficient, so an additional supply via the diet or as a supplement can be useful.

Accounting for around 60% of the free amino acid pool in skeletal muscle, it is the most important amino acid in muscle tissue in terms of quantity. It is also one of the most concentrated amino acids in blood plasma. It is found in almost all protein-rich foods, including poultry, fish, dairy products and pulses. The difference between glutamine and glutamic acid lies in their chemical structure: both can be converted into each other in the body, although only the L-form is used in food supplements.

Good to know: The name "semi-essential" (also: conditionally essential) means that under normal circumstances the substance does not need to be ingested through food. However, in stressful situations, such as intensive strength training, consumption can increase to such an extent that the body needs more than it can produce itself in order for all metabolic processes to function optimally.

Effects & benefits - why athletes rely on this amino acid

Glutamine has a wide range of effects, which is why the amino acid has been one of the most popular supplements in strength and endurance sports for decades. Here is an overview of what L-glutamine is used for:

Muscle building & regeneration

After intensive training sessions, the body's own glutamine levels can drop by up to 50 %. Many athletes therefore use the amino acid specifically after training to support the regeneration process. It is particularly appreciated by athletes with a high training volume or during a diet phase in which the body is under additional stress.

The substance exerts osmotic pressure in the muscle cells: It draws water into the cells, creating conditions that are considered favorable for protein synthesis. This effect, comparable to the effect of creatine, can give the muscle a fuller appearance. In addition, L-glutamine is the most important non-essential source of nitrogen in the body and plays a role in glycogen storage in the muscles.

Gut health & digestion

Intestinal health is a particularly well-researched area of application. The cells of the intestinal mucosa use the amino acid as a primary source of energy and it plays a central role in the normal cell function of the intestinal mucosa. In sports nutrition, L-glutamine is used for the gut to support the intestinal barrier, a topic that is receiving increasing attention under terms such as "leaky gut".

Athletes who suffer from digestive problems or a sensitive gastrointestinal tract often resort to it. It is one of the most widely used supplements in the field of intestinal health.

Immune system & defenses

Intense physical exertion can temporarily weaken the immune system, the so-called "open-window" phenomenon. Since immune cells (especially leukocytes) have a high demand for this amino acid, many athletes take it during periods of hard training blocks to ensure the supply of immune cells and support the body's defenses.

L-glutamine is also a precursor of gamma-aminobutyric acid (GABA), an important neurotransmitter in the brain. Together with cysteine and glycine, it serves as a starting material for the formation of glutathione, an important antioxidant.

What is it used for? - Areas of application at a glance

The areas of application of L-glutamine go beyond pure sports. Here is an overview of the most common areas of application:

• In weight training: As a post-workout supplement to support regeneration and performance
• During diets: To maintain muscle mass with a calorie-reduced diet
• For intestinal health: As an energy source for the cells of the intestinal mucosa
• During periods of stress: In the event of increased physical or mental stress
• After illness or injury: In phases of increased demand for amino acids
• For the immune system: During intensive training blocks or competition phases

L-glutamine powder or capsules - which form is right for you?

If you want to buy L-glutamine, you are often faced with the question: powder or capsules? Both dosage forms have their advantages. The following table will help you decide:

Our tip: If you take high doses (10-15 g per day), L-glutamine in powder form is significantly more cost-effective. Capsules are a more convenient solution for athletes who only take 3-5 g of the supplement daily.

Intake & dosage - how to supplement correctly

The correct intake of glutamine depends on your training goal and the intensity of your workout.

When to take it? - Timing around training

Athletes usually take L-glutamine directly after training to support recovery. Other popular times to take it:

• After training: mix 5-10 g into your post-workout shake
• In the morning on an empty stomach: 5 g directly after getting up
• Before bed: 5 g as the last meal of the day
• Throughout the day: 2-4 portions of 3-5 g each

Optimal dosage for athletes

Note: Do not exceed the specified daily intake. Food supplements are not a substitute for a balanced diet and a healthy lifestyle.

Side effects & safety - What you should know

L-glutamine side effects are rare at normal doses. According to studies, doses of up to 21 g per day are considered safe. Occasionally, users report slight gastrointestinal complaints with very high doses; this can usually be avoided by dividing the daily dose into several portions.

Buy L-glutamine at Gigas Nutrition - Our recommendations

Here you will find glutamine supplements from renowned sports nutrition brands such as GN Laboratories, Peak, Olimp, Scitec Nutrition and Big Zone. All products provide high-quality, pure amino acid quality, the difference lies in the dosage form, dosage and brand.

Our test winner: NanoPure® L-Glutamine from GN Laboratories

The NanoPure® L-Glutamine Powder 500g from GN Laboratories uses a special NanoPure® process for maximum purity and optimum solubility. The powder is tasteless, gluten-free and free from colorants. It can be ideally combined with your post-workout shake or BCAA drink.

Product comparison: The most popular glutamine products at a glance

Advantages of Gigas Nutrition:

• Fast shipping from Germany: orders placed on weekdays before 2 pm are shipped the same day
• Free shipping from 69 €
• Best price guarantee on all products

Still unsure which product is right for you? Take a look at our complete amino acid range, where you will find L-Glutamine as well as EAA and BCAA for a comprehensive amino acid supply.