Optimum Nutrition Glutamine Powder

Rating
Some supplements can contain a long list of ingredients, but others, such as Optimum Nutrition Glutamine Powder, contain just one, in order to provide optimum dosing.

Below we take an in-depth look at Optimum Nutrition Glutamine Powder, to see what benefits it offers consumers.

Optimum Nutrition Glutamine Powder Pros

  • Money-back guarantee offered (within fair use policy)
  • Unflavoured – can be added to some foods or into other protein shakes
  • Lots of positive customer reviews

Optimum Nutrition Glutamine Powder Cons

  • Limited benefits as a muscle building aid
  • No scoop provided
Watchdog Rejected

Optimum Nutrition Glutamine Powder

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What You Need To Know About Optimum Nutrition Glutamine Powder

Optimum Nutrition Glutamine Powder provides 5 grams of glutamine per tablespoon. This amino acid offers numerous benefits, as the body requires it for function, especially during illness. There are no other active ingredients in this supplement. The product appears to be a popular choice for people with GERD (Gastroesophageal reflux disease), and people looking to reduce sugar cravings.

What Are The Side Effects Of Optimum Nutrition Glutamine Powder?

Glutamine, in general, does not cause many side effects and is well tolerated in daily doses of up to 40 grams. However, some people could still experience side effects whilst taking this supplement. If you have a Monosodium glutamate (MSG) sensitivity (also known as “Chinese restaurant syndrome”) then you might also be sensitive to glutamine, because the body converts glutamine to glutamate. Glutamine might cause some mental changes in people with mania. It could potentially increase the chances of seizures in some people.

Other potential side effects include nausea, vomiting, stomach pain, gas, headaches, dizziness, dry mouth, mild skin rash or itching, and increased sweating.

How Much Does Optimum Nutrition Glutamine Powder Cost?

Optimum Nutrition Glutamine Powder can be purchased from the official Optimum Nutrition website, where customers have a choice between several sizes of tubs. Here, a 150g tub costs $15.99, a 300g tub costs $21.99, a 600g tub costs $33.99, and a 1000g tub costs $49.99. Delivery charges may also apply.

The product is also sold by numerous third-party online retailers. Prices vary so it definitely pays to shop around. Some retailers may only have limited options on sizing.

Our Verdict On Optimum Nutrition Glutamine Powder

Optimum Nutrition typically sells fitness-related supplements, but studies suggest that as a muscle-building aid, Glutamine has limited benefits compared with other individual amino acids (and a blend of essential amino acids is always best). However, it does have a range of other benefits, including mitigating muscle mass loss caused by illness.

Optimum Nutrition Glutamine Powder is unflavoured so that it can be mixed with any drinks or protein shakes. There are lots of different sizes to choose from, so customers can try a smaller size at first, or buy in bulk if they felt that they will continue to use the product.

The product is covered by a very generous returns policy; there is a limit to the guarantee, but as it is a fair use policy and consumers can return opened and used products (as long as 75% of the product or more remains) we are more than happy with this policy.

Overall, we do not recommend Optimum Nutrition Glutamine Powder to our readers as a muscle mass boosting aid, but it could definitely be a beneficial supplement for some people with specific circumstances.

Optimum Nutrition Glutamine Powder Review

Optimum Nutrition Glutamine Powder contains a single ingredient, Glutamine. The manufacturers of this supplement state that it is a great source of Glutamine, with one tablespoon of the powder providing more glutamine than four jumbo eggs, four oz. of lean beef, ¾ of a cup of soya beans, or a four oz. chicken breast.

Optimum Nutrition Glutamine Powder Facts

  • Manufactured by Optimum Nutrition
  • Choice of tub sizes: 150 grams, 300 grams, 600 grams, and 1000 grams
  • Anecdotal evidence suggests could reduce sugar cravings

This amino acid has a wide range of purposes in the body, and supplementing it could be beneficial to a variety of people. As it is found naturally in meat, eggs, and whey and casein protein, it may be beneficial for vegetarians and vegans to supplement glutamine. Glutamine may help the immune system and the intestines, as it is a preferred fuel source (over glucose) for some cells. Amino acids are used by the body as a building block of muscle, and so supplementing glutamine could potentially help those trying to gain muscle. It also appears to be effective at preventing muscle wastage in some people.

How to Take Optimum Nutrition Glutamine Powder

Directions for use are not provided in full on the official website.

  • While many powder supplements come with a scoop, this product does not. Instead, the company have stated that a single teaspoon will provide a 5g serving

Glutamine is also thought to reduce sugar cravings, but the evidence is anecdotal only. There are many customers who appear to use the supplement for this purpose, helping them to stick to a diet plan.

Optimum Nutrition Glutamine Powder Concerns:

  • Limited benefits as a muscle building aid
  • No scoop provided

Optimum Nutrition Glutamine Powder is manufactured by Optimum Nutrition, an American company who are based in Downers Grove, Illinois. They can be contacted using the information on their official website, or using any of their social media pages, which are all active and maintained. Optimum Nutrition pride themselves on maintaining a “Gold Standard”, with strict standards for “ingredients selection, quality control, lab testing and manufacturing processes”.

What Does Optimum Nutrition Glutamine Powder Claim To Do?

As usual, Optimum Nutrition makes very few claims about their supplements, leaving their customers to do their own research. Each tablespoon of this product contains 5 grams of glutamine, which is “more glutamine than 4 jumbo eggs, 4 oz. of lean beef, ¾ cup of soybeans or a 4 oz. chicken breast”. It is instantized for easy mixing and is unflavoured for versatility (and can be mixed with fruit juice, protein shakes and other drinks).

Does Optimum Nutrition Glutamine Powder Work?

Optimum Nutrition Glutamine Powder does appear to have a range of benefits, but it is not necessary for all to supplement Glutamine, thanks to it being present in a large number of foods. There are numerous customers who have found success with the supplement in combating leaky gut or preventing muscle wastage (where this is a risk as a side effect of illness or disease). It benefits as a muscle mass building aid appear to be limited, and anyone who wants to bulk up would be better off consuming a range of amino acids from their diet and the use of additional (complete) protein powders. There is a lack of clinical evidence but lots of anecdotal support to suggest that it can reduce sugar cravings.

The product is also a good option for anyone who has dietary restrictions that could lead to a glutamine deficiency.

What Are The Ingredients of Optimum Nutrition Glutamine Powder?

Optimum Nutrition Glutamine contains just one active ingredient, Glutamine. Each serving contains 5 grams.

  • Glutamine 5g: This is an essential amino acid, which is a building block of protein. It is the most abundant free amino acid in the body, and is produced in the muscles and distributed where it is needed via the circulatory system. Supplementation can only help to build muscle in limited circumstances, as (once again) most people enjoy sufficient stocks of glutamine from their regular diet or from protein powders. Source

Does Optimum Nutrition Glutamine Powder Have Any Side Effects?

Glutamine, in general, does not cause many side effects and is well tolerated in daily doses of up to 40 grams. However, some people could still experience side effects whilst taking this supplement. If you have a Monosodium glutamate (MSG) sensitivity (also known as “Chinese restaurant syndrome”) then you might also be sensitive to glutamine, because the body converts glutamine to glutamate. Glutamine might cause some mental changes in people with mania. It could potentially increase the chances of seizures in some people.

Other potential side effects include nausea, vomiting, stomach pain, gas, headaches, dizziness, dry mouth, mild skin rash or itching, and increased sweating.

Caution:

Not suitable for pregnant or breastfeeding women. Not suitable for anyone under the age of 18. If you are unsure about the suitability of this supplement for you, consult your doctor before purchase.

Are There Any Customer Reviews For Optimum Nutrition Glutamine Powder?

There are over 1000 customer reviews for Optimum Nutrition Glutamine Powder on Amazon, with an average rating of 4.5 stars. Although many people use this supplement for fitness-related purposes, there are a significant number of reviewers who use this supplement to help treat leaky gut and Gastroesophageal reflux disease, which is also known as GERD. There are also many reviewers who state that they use this supplement to help reduce sugar cravings.

not just for weight lifters! I have GERD and use this to fight off the constant threat of indigestion. I know this isnt the most common usage of this product, but it works amazingly in that way for me. I recommend it to anyone else who battles indigestion issues like I do.

This is the best thing for cravings. especially sugar and heavy foods. I have tried lots of things and I can’t do without this.

I couldn’t tell a difference when taking these vs not taking these post or pre workout.

My Marine husband started taking these when he could no longer bare his muscle pains. He started to feel a HUGE change within a day and a half of taking these. He is back at the gym every day and does not have any more muscle pains. This product is a must-have!

Does Optimum Nutrition Glutamine Powder Offer a Money-Back Guarantee?

When purchased directly from the official Optimum Nutrition, Optimum Nutrition Glutamine Powder is covered by a generous returns policy, which lasts for 30 days from the date of purchase. Some opened products are accepted, but only if less than 25% of the product has been used. This policy allows customers to try the product out without risk, but prevents abuse of the returns policy. Customers should contact Optimum Nutrition to get an RMA code before sending products back to the company.

The returns policies of third-party retailers may vary.

Where Can I Buy Optimum Nutrition Glutamine Powder?

Optimum Nutrition Glutamine Powder can be purchased from the official Optimum Nutrition website, where customers have a choice between several sizes of tubs. A 150g tub costs $15.99. A 300 g tub costs $21.99, a 600g tub costs $33.99, and a 1000g tub costs $49.99. Delivery charges may also apply.

The product is also sold by numerous third party online retailers. Prices vary so it definitely pays to shop around. Some retailers may only have limited options on sizing.

Predator Nutrition charge £49.99 for a 1kg tub of the powder. Delivery charges may apply. iHerb offers the 1kg tub for $47.23 plus delivery charges.

A 1 kg tub costs $54.49 from Amazon, plus shipping charges. The 600g tub costs $33.28, whilst the 300g tub costs $15.35. The 150g tub costs $23.59. Delivery charges may apply. Amazon’s UK store charges £32.88 for a 600g tub, plus delivery charges.

Bodybuilding.com charge $13.26 for the 150 gram tub, $29.50 for the 600 gram tub, and $39.99 for the 1kg tub.

Summary: Optimum Nutrition Glutamine Powder


Optimum Nutrition Glutamine Powder

2.3 out of 5
Optimum Nutrition Glutamine Powder Rating

The Muscle Watchdog does not recommend Optimum Nutrition Glutamine Powder.

  • Effectiveness
  • Safety
  • Price / Guarantee

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Disclaimer: Our reviews and investigations are based on extensive research from the information publicly available to us and consumers at the time of first publishing the post. Information is based on our personal opinion and whilst we endeavour to ensure information is up-to-date, manufacturers do from time to time change their products and future research may disagree with our findings. If you feel any of the information is inaccurate, please contact us and we will review the information provided.

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