{"id":12247,"date":"2026-06-18T08:15:22","date_gmt":"2026-06-18T05:15:22","guid":{"rendered":"https:\/\/www.aktifinternational.com\/en\/?p=12247"},"modified":"2026-06-17T10:46:28","modified_gmt":"2026-06-17T07:46:28","slug":"what-is-glutamine","status":"publish","type":"post","link":"https:\/\/www.aktifinternational.com\/en\/what-is-glutamine\/","title":{"rendered":"What is glutamine? What is it used for and how should it be used?"},"content":{"rendered":"<p>Estimated reading time: 9 minutes 16 seconds<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.aktifinternational.com\/en\/what-is-glutamine\/#What_you_need_to_know_about_glutamine\" >What you need to know about glutamine<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.aktifinternational.com\/en\/what-is-glutamine\/#What_is_glutamine\" >What is glutamine?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.aktifinternational.com\/en\/what-is-glutamine\/#What_is_L-glutamine\" >What is L-glutamine?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.aktifinternational.com\/en\/what-is-glutamine\/#What_is_glutamine_used_for\" >What is glutamine used for?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.aktifinternational.com\/en\/what-is-glutamine\/#What_are_the_benefits_of_glutamine\" >What are the benefits of glutamine?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.aktifinternational.com\/en\/what-is-glutamine\/#Which_foods_contain_glutamine\" >Which foods contain glutamine?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.aktifinternational.com\/en\/what-is-glutamine\/#How_can_glutamine_deficiency_be_recognized\" >How can glutamine deficiency be recognized?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.aktifinternational.com\/en\/what-is-glutamine\/#How_should_glutamine_supplements_be_used\" >How should glutamine supplements be used?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.aktifinternational.com\/en\/what-is-glutamine\/#When_should_glutamine_be_taken\" >When should glutamine be taken?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.aktifinternational.com\/en\/what-is-glutamine\/#What_are_the_side_effects_of_glutamine\" >What are the side effects of glutamine?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.aktifinternational.com\/en\/what-is-glutamine\/#What_are_the_harms_of_L-glutamine\" >What are the harms of L-glutamine?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.aktifinternational.com\/en\/what-is-glutamine\/#Frequently_Asked_Questions\" >Frequently Asked Questions<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.aktifinternational.com\/en\/what-is-glutamine\/#Is_it_possible_to_lose_weight_with_glutamine\" >Is it possible to lose weight with glutamine?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.aktifinternational.com\/en\/what-is-glutamine\/#Can_glutamine_be_used_during_pregnancy\" >Can glutamine be used during pregnancy?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.aktifinternational.com\/en\/what-is-glutamine\/#What_happens_if_you_stop_taking_glutamine\" >What happens if you stop taking glutamine?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.aktifinternational.com\/en\/what-is-glutamine\/#Does_glutamine_harm_the_kidneys\" >Does glutamine harm the kidneys?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.aktifinternational.com\/en\/what-is-glutamine\/#Can_glutamine_and_creatine_be_used_together\" >Can glutamine and creatine be used together?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_you_need_to_know_about_glutamine\"><\/span>What you need to know about glutamine<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The hustle and bustle of daily life, intense training programs, or periods of stress we encounter can deplete our body&#8217;s energy reserves faster than we might think. During these demanding times, glutamine becomes a frequently discussed topic. It is one of the most important amino acids naturally produced by the body and plays a role in vital processes.<\/p>\n<p>Although it is often perceived merely as a supplement preferred by athletes for muscle development, this special compound is actually one of the hidden heroes of our overall well-being, from supporting the immune system to contributing to digestive health.<\/p>\n<p>So, what exactly does this versatile fuel of our body do, and in which situations should it be supported externally? If you are curious about the answers to these and similar questions, we have compiled everything you need to know about glutamine in this article.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_is_glutamine\"><\/span>What is glutamine?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Glutamine is an amino acid naturally found in the body and involved in many biological processes. Found in high concentrations particularly in muscle tissue, this compound is considered one of the building blocks of proteins. Although the body can produce glutamine under normal conditions, the required amount may increase during intense exercise, illness, injury, or prolonged stress.<\/p>\n<p>This amino acid is also used by immune system cells and intestinal cells. Therefore, glutamine should not be viewed solely as a muscle-related component. In addition to helping meet the energy needs of cells, it also plays a role in various metabolic processes.<\/p>\n<p>Glutamine can be obtained through food as well as in supplement form. Although it is commonly preferred among athletes, its purpose of use may vary from person to person. However, the most accurate assessment regarding glutamine needs and use should be made by considering an individual&#8217;s health condition and lifestyle.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_is_L-glutamine\"><\/span>What is L-glutamine?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>L-glutamine is the biologically active form of the amino acid glutamine used by the body. In everyday language, the terms glutamine and L-glutamine are often used interchangeably. However, from a scientific perspective, amino acids exist in different molecular forms, and the form utilized by the human body is L-glutamine.<\/p>\n<p>As one of the most abundant amino acids in muscle tissue, L-glutamine is involved in many processes ranging from protein synthesis to cellular energy production. It is also heavily utilized by intestinal cells and immune system cells. Therefore, it attracts attention not only for sports performance but also for its various functions related to overall health.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_is_glutamine_used_for\"><\/span>What is glutamine used for?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Glutamine is one of the amino acids that performs many different functions in the body. Since it participates in protein synthesis, it plays a role in preserving and repairing muscle tissue. For this reason, it is frequently discussed among individuals engaged in intense physical activity.<\/p>\n<p>However, the functions of glutamine are not limited to muscles. This amino acid is also used by immune system cells, helping support the normal functioning of the body&#8217;s defense mechanisms. In addition, it is considered an important energy source for intestinal cells and may contribute to maintaining the intestinal barrier.<\/p>\n<p>The body&#8217;s need for glutamine may increase during situations such as intense exercise, post-surgical recovery, infections, or prolonged stress. Therefore, glutamine is regarded as one of the important components that support the continuity of various cellular processes.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_are_the_benefits_of_glutamine\"><\/span>What are the benefits of glutamine?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Since glutamine is an amino acid involved in many important processes in the body, it may provide various benefits in different areas. The main benefits of glutamine can be listed as follows:<\/p>\n<ul>\n<li>May contribute to the preservation and repair of muscle tissue.<\/li>\n<li>May support muscle development by participating in protein synthesis processes.<\/li>\n<li>May help with recovery after intense exercise.<\/li>\n<li>May contribute to maintaining normal immune function since it is utilized by immune system cells.<\/li>\n<li>May serve as an important energy source for intestinal cells.<\/li>\n<li>May support the maintenance of the intestinal barrier.<\/li>\n<li>May help meet the body&#8217;s increased demands during periods of heightened physical stress.<\/li>\n<\/ul>\n<p>The effects of glutamine can vary from person to person, and the benefits obtained may differ depending on diet, lifestyle, health condition, and purpose of use. Therefore, individuals considering glutamine supplementation should take their own needs into account.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Which_foods_contain_glutamine\"><\/span>Which foods contain glutamine?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Glutamine is an amino acid naturally found in many animal- and plant-based foods. Although the body can produce its own glutamine, it is also possible to obtain a certain amount through daily nutrition. Protein-rich foods, in particular, are important sources of this amino acid.<\/p>\n<p>The main foods containing glutamine include:<\/p>\n<ul>\n<li>Red meat<\/li>\n<li>Chicken and turkey<\/li>\n<li>Fish varieties<\/li>\n<li>Eggs<\/li>\n<li>Dairy products such as milk, yogurt, and cheese<\/li>\n<li>Legumes such as beans, chickpeas, and lentils<\/li>\n<li>Soy products<\/li>\n<li>Spinach<\/li>\n<li>Cabbage<\/li>\n<li>Parsley<\/li>\n<li>Beetroot<\/li>\n<li>Nuts and certain seeds<\/li>\n<\/ul>\n<p>Animal protein sources generally contain higher amounts of glutamine, while plant-based foods can also contribute to daily intake. A balanced and varied diet helps provide the amino acids the body needs naturally.<\/p>\n<p>During certain periods when glutamine requirements increase, diet alone may not be sufficient, and supplementation may become an option. However, in such cases, it is important to evaluate personal needs and seek professional advice.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_can_glutamine_deficiency_be_recognized\"><\/span>How can glutamine deficiency be recognized?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Glutamine deficiency is not a condition that presents with a single specific symptom. Since glutamine is an amino acid naturally produced by the body, changes in its levels can manifest in different ways.<\/p>\n<p>Some signs that may be associated with reduced glutamine levels include:<\/p>\n<ul>\n<li>Persistent fatigue and low energy<\/li>\n<li>Muscle loss or a feeling of muscle weakness<\/li>\n<li>Longer recovery times after exercise<\/li>\n<li>Frequent illnesses due to weakened immune function<\/li>\n<li>Certain digestive system complaints<\/li>\n<li>Reduced overall performance and endurance<\/li>\n<\/ul>\n<p>However, these symptoms are not unique to glutamine deficiency and may also occur in many different health conditions. Therefore, it is not possible to make a definitive assessment based solely on symptoms. When necessary, glutamine levels can be evaluated through various laboratory tests. Such testing is generally performed when there is a specific health concern or medical indication.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_should_glutamine_supplements_be_used\"><\/span>How should glutamine supplements be used?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The way glutamine supplements are used may vary depending on a person&#8217;s age, health condition, dietary habits, and intended purpose. Therefore, it is not possible to define a single usage plan that applies to everyone. Supplements are generally available in powder, capsule, or tablet form. Powdered products are typically mixed with water or other beverages before consumption.<\/p>\n<p>For sports-related purposes, some individuals prefer taking glutamine before or after training, while in certain situations it may be recommended at different times of the day.<\/p>\n<p>Since product formulations and concentrations may vary, it is important to follow the manufacturer&#8217;s instructions when determining the amount to use. Supplements are not a substitute for a balanced and varied diet. Therefore, before deciding to use glutamine, individual needs should be evaluated and the most appropriate usage method determined with professional guidance.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"When_should_glutamine_be_taken\"><\/span>When should glutamine be taken?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The timing of glutamine intake may vary depending on the purpose of use and a person&#8217;s daily routine. Therefore, there is no single time period that applies to everyone. However, people who use glutamine supplements often prefer certain time intervals.<\/p>\n<p>Among athletes, glutamine is most commonly used after training. This is due to the desire to support the body&#8217;s recovery process following intense exercise. Some people prefer to take it before training or at different times throughout the day. Glutamine may also be taken in the morning on an empty stomach, between meals, or before bedtime. The preferred timing may vary depending on an individual&#8217;s dietary habits, exercise program, and goals.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_are_the_side_effects_of_glutamine\"><\/span>What are the side effects of glutamine?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Glutamine is generally considered a well-tolerated amino acid when used in recommended amounts. However, as with any supplement, some individuals may experience unwanted effects. The likelihood of these effects may vary depending on the amount used, the individual&#8217;s health condition, and the product&#8217;s formulation.<\/p>\n<p>Possible side effects associated with glutamine use may include:<\/p>\n<ul>\n<li>Stomach discomfort<\/li>\n<li>Abdominal pain or bloating<\/li>\n<li>Nausea<\/li>\n<li>Gas formation<\/li>\n<li>Diarrhea or changes in bowel habits<\/li>\n<li>Headache<\/li>\n<\/ul>\n<p>In rare cases, some individuals may develop sensitivity to ingredients contained in the product. Therefore, if any unexpected symptom occurs after using a supplement, it is recommended to discontinue use and consult a healthcare professional.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_are_the_harms_of_L-glutamine\"><\/span>What are the harms of L-glutamine?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>L-glutamine is the active form of the amino acid glutamine used by the body. Therefore, in terms of potential harms and side effects, &#8220;glutamine&#8221; and &#8220;L-glutamine&#8221; are generally evaluated under the same category in most practical situations. Possible adverse effects may include:<\/p>\n<ul>\n<li>Stomach discomfort, bloating, or gas<\/li>\n<li>Nausea<\/li>\n<li>Abdominal pain<\/li>\n<li>Diarrhea or changes in bowel habits<\/li>\n<li>Headache<\/li>\n<\/ul>\n<p>These complaints are more commonly observed with high doses, in individuals who are sensitive to the product, or due to auxiliary ingredients contained in the supplement.<\/p>\n<h2 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span>Frequently Asked Questions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Is_it_possible_to_lose_weight_with_glutamine\"><\/span>Is it possible to lose weight with glutamine?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Glutamine is not a supplement that directly promotes fat burning on its own. However, it may contribute indirectly to weight management. In particular, it may help preserve metabolism by reducing muscle loss during periods of intense exercise. It may also support digestive balance by contributing to intestinal health. Nevertheless, the primary factors in weight loss remain maintaining a calorie deficit and engaging in regular physical activity.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_glutamine_be_used_during_pregnancy\"><\/span>Can glutamine be used during pregnancy?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>There is no clear and universal recommendation regarding glutamine use during pregnancy. This is because supplement use during pregnancy depends on individual health status, nutrition, and medical evaluation. Although glutamine is an amino acid naturally present in the body, taking it as an additional supplement during pregnancy should only be considered with a doctor&#8217;s approval. Balanced nutrition should always take priority over unnecessary supplementation.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_happens_if_you_stop_taking_glutamine\"><\/span>What happens if you stop taking glutamine?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Since glutamine is naturally produced by the body, stopping supplementation generally does not cause significant withdrawal effects. The additional support provided by supplementation gradually decreases, and the body returns to its natural balance. Particularly during periods of intense training, recovery time or muscle repair rates may change slightly depending on the individual. However, this does not result in any permanent negative effect.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Does_glutamine_harm_the_kidneys\"><\/span>Does glutamine harm the kidneys?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>In healthy individuals, glutamine use at recommended doses generally does not harm the kidneys. Glutamine is one of the body&#8217;s natural amino acids and is metabolized by the kidneys as well. However, protein and amino acid supplements should be carefully evaluated in individuals with kidney disease. Therefore, people with chronic kidney disorders should consult a doctor before using glutamine.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_glutamine_and_creatine_be_used_together\"><\/span>Can glutamine and creatine be used together?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Glutamine and creatine can generally be used together, and this combination is common among athletes. While creatine primarily supports strength, performance, and short-term energy production, glutamine contributes to recovery and muscle repair processes. Since they work through different mechanisms, they generally do not negatively affect each other&#8217;s effectiveness.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Estimated reading time: 9 minutes 16 seconds What you need to know about glutamine The hustle and bustle of daily life, intense training programs, or periods of stress we encounter can deplete our body&#8217;s energy reserves faster than we might think. During these demanding times, glutamine becomes a frequently discussed topic. It is one of [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":12248,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[],"class_list":["post-12247","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/www.aktifinternational.com\/en\/wp-json\/wp\/v2\/posts\/12247","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.aktifinternational.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.aktifinternational.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.aktifinternational.com\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.aktifinternational.com\/en\/wp-json\/wp\/v2\/comments?post=12247"}],"version-history":[{"count":1,"href":"https:\/\/www.aktifinternational.com\/en\/wp-json\/wp\/v2\/posts\/12247\/revisions"}],"predecessor-version":[{"id":12249,"href":"https:\/\/www.aktifinternational.com\/en\/wp-json\/wp\/v2\/posts\/12247\/revisions\/12249"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.aktifinternational.com\/en\/wp-json\/wp\/v2\/media\/12248"}],"wp:attachment":[{"href":"https:\/\/www.aktifinternational.com\/en\/wp-json\/wp\/v2\/media?parent=12247"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.aktifinternational.com\/en\/wp-json\/wp\/v2\/categories?post=12247"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.aktifinternational.com\/en\/wp-json\/wp\/v2\/tags?post=12247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}