Best Glutamine Supplements  

(Last Updated On: September 3, 2019)

Did you know that glutamine is an amino acid that most proteins are made from? The human body produces this amino acid naturally but glutamine supplements help to produce more. So, which glutamine supplement is the best for your body or circumstance? There are glutamine supplements to meet everyone’s needs so you can find the glutamine supplement that is right for you.

BulkSupplements L-Glutamine Powder

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It is a pure pharmaceutical-grade glutamine supplement according to the company. But how can this be proven to be this high of a grade? Then the product description says the supplement has been tested for guaranteed and verification of purity. And it is a NON-GMO supplement but how do we know these facts or reported facts are true. The product description does not give any links for the tests for purity or any of the research results. It would authenticate the observations in this product description if they gave the results of the test.

Feedback: The product has had over 3900 reviews written about it so the product is well-known on the market. This first review is very alarming because the customer writes that he has a leaky gut. This means that the lining of the stomach is thin and the lining lets things into the bloodstream that should not go into the bloodstream. The person has a weak stomach lining and poisonous things are entering his bloodstream.

The customer writes a lengthy review of how this product will fix a leaky gut and repair the stomach lining so the wrong elements will not enter the bloodstream. So, the customer says that by taking this supplement the amino acids in it will restore the stomach lining so it will be made thick again. But if this person has a weak stomach lining this supplement will not heal the stomach lining and return the stomach lining to its original state.

The customer needs to see a health professional who may recommend surgery or some other powerful medication to counteract this weak stomach lining. The customer may have a much more serious health problem that is causing his gut to leak. This supplement will not solve the problem of a leaky gut. It may help it but it will not solve the problem. This customer has a serious stomach issue going on here. He did rate the product 5-star and it sounds like the supplement is helping to cure the leaky gut but his man needs to seek serious medical help. A leaky gut could be potentially life-threatening.

The customer is saying that he has used this company to purchase his supplements over the last 2 years. But he says they have radically changed the way the process their supplements. He says the latest batch he received smelled like ammonia and he reports that dishonest companies will use cheap fillers in place of genuine amino acids. He says this company is using the same practice and he is disappointed the company is using this dishonest manufacturing process. This is a very serious allegation the customer is making and he really does not have any solid proof that the company is engaged in this immoral manufacturing process. The customer needs to provide some serious proof that what he says the company is doing is the truth.

Ammonia can kill a person if it is taken in the right quantities and the customer better come up with some serious proof that these allegations are true. He could ruin the reputation of this company in the long run. Like it has been said that these are very serious allegations the customer is making against this company. The customer rated the product one-star. But he does not support his allegations with solid proof.

Best Glutamine Supplements  

Kaged Muscle, L-Glutamine Powder

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Each serving contains 5g of fermented glutamine that will help you to recover lost glutamine quickly after a heavy workout. Glutamine promotes protein synthesis which enhances muscle mass. Glutamine helps to fight lactic acid buildup which causes the muscles to fatigue. This will allow you to stay stronger longer during your workout. The product has no animal substance in it and it contains plant-based ingredients. And it has no banned materials in the product.

The company claims that each container has 100% ingredient transparency on the product. So, you know that you are getting exactly what it says you will get on the bottle. There is no deception on the ingredients list on each container this company sells.

Feedback: The customer says these supplements are the best and they have really helped the client. He is very careful with what he puts in his body as he gets older. He has had inflammation in his gut and these supplements have helped his gut to feel better. He has not felt this good in years. He says the gut has cleared up because he took the supplements. The client rated the product 5-stars. But the client needs to be careful with taking these supplements.

He has suffered from various stomach issues over the years and he thinks these supplements have cleared up the stomach issues permanently. This may not be the case the supplements may have temporarily cleared the stomach issues that have been plaguing him for years. The customer needs to seek medical help because if he has had stomach issues for years he may have a much deeper medical condition going on in his stomach. You just cannot play around with stomach issues. The customer may be at serious risk here with these stomach issues. The customer rated the product 5-stars.

This customer rated the product 3-stars and does not say much in the review. The customer says the product is ok and it does not dissolve as well as others she has tried. The customer doesn’t say whether the product helped her or did not help her while she consumed the product. Beyond it does not mix well the customer does not say anything else about the product that would help other customers reading the review.

It is not clear why the customer gave the product 3-stars either. The review needs to elaborate on the benefits of the product or the uselessness of the product. The content needs to support and justify the rating the customer gave the product. This review does not explain why the customer gave the product a 3-star rating. Will the customer try the product again?

The customer’s husband is 63 years-old and the customer is 54-years-old and they work out regularly but the product has helped the husband and wife retain muscle increase. It is hard for them to keep their gains but since they added the product to their regimen the gains have lasted. The customer rated the product 5-stars and the customer says the product does what it says it will do. The customer and her husband are happy with the product and they will continue to use it. They are on their second canister.

Optimum Nutrition L-Glutamine Muscle Recovery Powder

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The product contains 5g of pure L-glutamine per serving and this is the most abundant amino acid in the body. It also plays an important role in muscle protein development and like all the other manufacturers say this manufacturer says that glutamine levels will be depleted during heavy exercising. This product will replenish those depleted glutamine levels quickly. The powder mixes well and instantly in most liquids the company claims. The powder is unflavored and the bottles come in 4 sizes–150 mg, 300 mg, 600 mg, 1000 mg. The product does not contain a scoop which is odd. Being a powder product it should have a scoop already in the container.

Feedback: The customer has IBD-UC– Ulcerative colitis (UL-sur-uh-tiv koe-LIE-tis) is an inflammatory bowel disease (IBD) that causes long-lasting inflammation and ulcers (sores) in your digestive tract. Ulcerative colitis affects the innermost lining of your large intestine (colon) and rectum. The customer also suffers from IBS–irritable bowel syndrome (IBS) is a common disorder that affects the large intestine. Signs and symptoms include cramping, abdominal pain, bloating, gas, and diarrhea or constipation, or both. IBS is a chronic condition that you’ll need to manage long term.–which are both serious stomach and bowel issues.

She says the supplement has helped her leaky gut but it seems like she has some serious stomach issues that a supplement will take care of She has 2 serious bowel issues and her gut is leaking. She needs to seek professional help to see what the doctor would say about the stomach issues. These conditions can be life-threatening and she needs to consult a doctor.

She rated the product 5-stars but this product will not cure her health issues.

People who have serious stomach issues think that by taking these glutamine supplements will heal the leaky gut but the leaky gut is most likely a sign that the body has a much deeper health issue that could be life-threatening and may require the attention of a medical professional which could lead to a more extensive medical diagnosis. These supplements cannot substitute for the diagnosis of a health professional. It is concerning that these clients are taking just the supplements for leaky guts. The supplements will not cure the leaky guts.

This is frustrating for the customer because they said there was no scoop in the product’s bottle and they do not know how much product they are taking per serving. The customer has emptied out the container and there was no scoop in the container. The customer says all the other supplements they have used always had a scoop in the container. The company needs to put a scoop in its container because how else our customers supposed to measure out how much powder they are using each time they use the product?  The customer rated the product 2-stars.

The customer has severe sugar cravings and she started taking this supplement on the advice of her natural doctor. The doctor told her to take it to clean out a leaky gut. She doesn’t know if it is helping her gut or not but it is reducing her sugar cravings. She takes it twice a day and it stops the sugar cravings. If she does not take the medicine her sugar cravings come back with a vengeance so it sounds like she will keep taking the supplements. She rated the product 5-stars and she may be taking the supplement for a leaky gut. Again, the supplement should be taken in conjunction with the advice of a health professional when it involves a leaky gut.

The customer says he has used the supplement in pill form then he switched to powder form and he gets a lot more product in powder form. The customer says it has a sweet to no scent and it can be mixed in any drink and it dissolves easily in liquids. The customer said once it did not taste right and it concerned him. But since that one time, the product has tasted fine. It does not taste grainy but the customer does not say if the product helped him or not. The customer rated the product 4-stars but the customer does not give any indication why he rated it so high. The review lacks pertinent information as to if the supplement is effective or not.

NOW L-Glutamine 

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The company says amino acids help with immunity and glutamine is an essential amino acid. Under certain circumstances, the body may need more glutamine than the body can produce. Using this supplement can add the extra glutamine the body needs. The glutamine carries nitrogen throughout the body and maintains the nitrogen balance in the body. The company says the product is free of many if not all chemical ingredients. It contains only natural or organic elements in the product. It is a safe product for a consumer to use.

Halal, Non-GMO, Kosher, Dairy Free, Egg Free, Made without Gluten, Nut Free, Soy Free, Vegan/Vegetarian  these are the ingredients the company says the product is free of. The company adheres to current Good Manufacturing Procedures and voluntary Natural Products Association (NPA) Good Manufacturing Practices (GMP) regulations. The product is packaged by a family-owned company in business since 1968.

Feedback: The first customer says they had the worst cramps they ever experienced after taking this supplement that they thought they were going to die. They claim this is a very bad product that should not be sold online because it is too dangerous to consume. It is sad that the consumer had this adverse reaction but is it plausible that an amino acid which is a crucial element for the human body to function could almost kill a person?

This person seems to have a very serious health condition they need to have addressed because an amino acid supplement will not cause such bad cramps that a person thinks they are going to die from taking. The supplement may have triggered a much deeper health issue the customer may have. Or this could be a fake review because it sounds so sensationalistic. The customer rated the product one-star. But this rating is very questionable.

Another consumer says the product helped them to quit a life-threatening alcohol and Adderall addiction. They would take a very high dose of Adderall in the morning and drink a pint of scotch at night. They tried to neutralize the Adderall cravings with the alcohol. They became an alcoholic and they tried to quit both the alcohol and Adderall all at the same time. They felt miserable after trying to quit both after two days. They found this product and they tried it and their brain felt normal after taking the product. They have since quit the Adderall and the alcohol and the customer rated the product 5-stars. The consumer says the product saved their life.

Pure Encapsulations – l-Glutamine Powder 

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This is the extent of the product description-Pure Encapsulations – L-Glutamine 500 mg Powder – 227g. This is the extent of the product description which is extremely limiting. There is no mention of any ingredients listed in the product.

Feedback: The product has had only 82 reviews written about it. So the few reviews and the limited product description may be hurting the sales of this product. It may be a great product and it may be able to help people immensely but the company needs to expand the product description. The client base wants to know what they are putting into their bodies.

The customer’s doctor told the customer to take this product for their stomach ailments. The customer took the product and the bloating issues and the stomach issues are gone. The customer says this is a wonder product.

Best Glutamine Supplements  


We have discussed some of the best L-glutamine supplements available on the market today and they have helped some customers with their stomach and bloating issues. One customer claims they took a supplement and almost felt like they were going to die from the cramps the medicine caused. But it could be that the supplement triggered a deeper health issue that the customer needs to deal with. It is improbable that the amino acid supplement caused these very painful cramps.

Written by Irina Radosevic MD
Irina graduated from the University of Belgrade, School of Medicine as a Doctor of Medicine (MD) and spent over 3 years working in the Clinical Hospital Center Zvezdara, in the Department of Emergency Medicine. She also undertook a postgraduate in Cardiology from the same University and had previously worked for over a year as a Physician and Nutritionist Dietitian for the Fitness club Green Zone. She eventually left her chaotic but fulfilling job in the ER to pursue her passion of writing, travelling and mountain climbing which has included writing a first aid course for the alpine club of Belgrade. Irina currently works as a VA for PintMedia focusing on medical and travel writing. Feel free to connect with Irina on LinkedIn and FaceBook. Her CV can be seen here.