L-Glutamine
L-Glutamin – definition and facts in our glossary. The body's most common amino acid. Important during stress and intense exercise.
What is L-Glutamine?
L-Glutamine is the most abundant amino acid in the body and plays a crucial role in several biological processes.
How does it work in the body?
L-Glutamine has several functions in the body, including:
Scientific benefits
Several studies have investigated the benefits of L-Glutamine. Here are some of the key findings:
- Gut health: Research shows that L-Glutamine can help repair the intestinal mucosa and counteract leaky gut, which is linked to various autoimmune diseases (Fasano, 2005).
Dosage and recommendations
The recommended dose of L-Glutamine can vary depending on the individual's needs and the purpose of use. Generally, the following is recommended:
- For general health: 5-10 grams per day.
- For athletes: 10-20 grams per day, divided into several doses.
- In stressful situations or illness: up to 30 grams per day may be beneficial, but this should always be discussed with a doctor.
It is important to note that L-Glutamine should be taken alongside a balanced diet and not as a replacement for meals.
Best sources and forms
L-Glutamine is available in several forms, including:
- Powder: The most popular and cost-effective way to consume L-Glutamine.
- Capsules: A convenient form for those who do not like the taste of powder.
- Food sources: L-Glutamine is naturally found in foods such as meat, fish, eggs, dairy products, and certain plant-based sources like beans and nuts.
Side effects and warnings
Although L-Glutamine is generally considered safe for most people, some individuals may experience side effects, including:
- Gastrointestinal issues, such as gas, bloating, or diarrhoea.
- Excessive dosing can lead to electrolyte imbalances.
- People with kidney or liver problems should consult a doctor before taking L-Glutamine.
It is always best to consult a healthcare provider before starting any new supplement, especially if you have existing medical conditions or are taking other medications.
Frequently asked questions
What are the main benefits of L-Glutamine?
It can also help maintain acid-base balance.
Can I get enough L-Glutamine through diet?
Yes, L-Glutamine is naturally present in many foods such as meat, fish, eggs, and dairy products. However, supplementation may be beneficial under certain circumstances.
Is L-Glutamine safe to take?
Generally, L-Glutamine is safe for most people, but it is important to follow recommended dosages and consult a doctor if you have any health concerns.
How long does it take to see results from L-Glutamine?
Products containing L-Glutamine
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7 Nutrition - Glutamine (Unflavored - 300g)

7 Nutrition - Glutamine Max 1000mg - 120 Caps

Addict Sport Nutrition (ADD) - Anabolic Triple Whey Complex

Addict Sport Nutrition - Pre Workout Pump Cuts

Allnutrition - Glutamine Recovery Amino
