Wednesday, 24 July 2024


Jarrow Formulas L-Glutamine Powder Supplement Review

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Jarrow Formulas L-Glutamine is available in both capsule and powder form, with 2 grams per serving for the powder, and 1 gram in each of the capsules. So which version represents better value for money?

Glutamine is already produced by the body in a sufficient quantity to support normal daily functions, which is why it’s classed as a non-essential amino acid. However if you exercise regularly, especially with resistance exercises for bodybuilding or CrossFit, supplements like L-Glutamine can significantly boost your performance.

In this review we’ll be taking a look at how this compares to other bestselling glutamine powders and tablets from other leading supplement companies, such as MuscleTech and Optimum Nutrition.

We’ll also consider the best dosage, how it can be used in a supplement stack, and provide a quick summary of customer reviews from sites like Amazon. This will guarantee you only buy the best glutamine for your fitness goals and budget.

Jarrow Formulas L-Glutamine Ingredients

Jarrow Formulas L-Glutamine Ingredients

As the most abundant nonessential amino acid in the body, L-glutamine plays an important role in diminishing muscle soreness following eccentric exercise.

The powder from Jarrow Formulas has a recommended serving size of 2 g, which is well below the 5 g seen with most glutamine supplements. This can make it difficult to compare the cost-per-serving, which is why we always look at the cost-per-gram.

In the smaller tubs, Jarrow Formulas is one of the most expensive glutamine supplements on the market. But once you start getting up to the 500 g and 1000 g tubs, the cost-per-gram is much more affordable ($0.04 vs. $0.17 per gram for AMRAP L-Glutamine).

Bodybuilders will typically take 2-3 of these 6 gram servings throughout the day, with 1 dose in the morning, 1 dose post-workout, and 1 at night before sleep. Although glutamine is perfectly safe, it’s a good idea not to go much above 10 to 15 grams per day.

What results can I expect?

It’s not hard to find a list of glutamine health benefits, but knowing which are real and backed by science isn’t so straightforward.

There’s also no shortage of reviews on sites like Amazon, with a lot of anecdotal claims surrounding muscle recovery and keeping muscles strong. Unfortunately we’re yet to find a single scientific study that shows glutamine increases muscle strength.

In fact, a small pilot study published in the Journal of Strength and Conditioning tested high doses of glutamine (0.3 g x bodyweight kg) on resistance-trained men. After 4 exercise sets to failure, there were no differences in the average number of maximal repetitions performed between the glutamine and control groups.

The two main benefits are; boosting your immune function and supporting digestive health. It’s also an important nutrient for healing Leaky Gut Syndrome. These are both backed by scientific studies, but effects usually won’t become obvious until after 8 weeks of continuous use.

Jarrow Formulas Glutamine powder is suitable for vegans and vegetarians. They also make glutamine in capsule form, which isn’t suitable due to the capsules containing gelatin. Neither of the products contain wheat, gluten, soy, dairy, nuts, or shellfish.

Jarrow Formulas L-Glutamine Powder Supplement

Jarrow L-Glutamine – Product Summary

  • 2g L-Glutamine per serving
  • Suitable for vegetarians/vegans
  • No wheat, no gluten, no soybeans, no dairy, no egg, no fish, no peanuts
  • Mix 2g into 6 to 8 ozs of water, juice, pre-workout drink, or protein shake

Health benefits of Jarrow L-Glutamine

For a comprehensive list of glutamine health benefits, we recommend taking a look at our Glutamine Buying Guide.

When is the best time to take it?

Recommended use

Mix 1/2 teaspoon into 6 to 8 oz. of fluid and drink when stomach is empty or as directed by your qualified healthcare professional.

Jarrow Glutamine vs. O.N. Glutamine

Jarrow Formulas Glutamine
Optimum Nutrition Glutamine
Glutamine: 2 g
Glutamine: 5 g
Serving size: 2 g
Serving size: 5 g
Container size: 1000 g
Container size: 1000 g
Cost per serving: $0.09
Cost per serving: $0.20

Jarrow Glutamine vs. MuscleTech Platinum

Jarrow Formulas Glutamine
MuscleTech Platinum Glutamine
Glutamine: 2 g
Glutamine: 5 g
Serving size: 2 g
Serving size: 5 g
Container size: 1000 g
Container size: 300 g
Cost per serving: $0.09
Cost per serving: $0.29

What sizes are available?

With a serving size of 2 g and a product weight of 1000 g, each tub provides you with approximately 500 servings. Smaller tubs are also available, weighing 227 g (113 servings) and 113 g (56 servings).

Save money with Amazon

If you’re looking to save money on your monthly supplement order, you might want to consider the Amazon Subscribe & Save program.

Subscribe & Save allows you to unlock savings of up to 15% on a wide range of sports nutrition products, including Jarrow Formulas L-Glutamine powder (selected sizes).

You can save 5% with a subscription to 1 product, or save the full 15% by subscribing to 5 products, provided they’re all delivered to the same address. The delivery schedule can be set from monthly, up to once every 6 months.

Although 5 products might sound a lot, if you already supplement with a protein powder, multivitamin, creatine, BCAA, and glutamine, the savings can soon add up. But it’s best to order before you run out of your current supplements, because Amazon set the day of the month each order is sent (usually around the 14th).

Who are Jarrow Formulas?

Jarrow Formulas has been formulating and supplying high quality nutritional supplements since 1977. Today, they offer a complete product line of vitamins, minerals, probiotics, amino acids, and enzymes.

Their goal is to promote optimal health through high quality, effective, and affordable formulations, made from scientifically proven ingredients. A scientific panel is in place to provide guidance on product research, development, and the latest emerging science.

Jarrow Formulas supplements provide a range of health benefits, including better bone and joint health, cardiovascular health, and immune support. All products are tested by third-party labs that are ISO and USDA accredited. This means they adhere to the strict cGMP/GMP guidelines set by the FDA.

Some of their current bestsellers include Methyl B-12, Whey Protein, and the Jarro-Dophilus EPS probiotic supplement. Each of these products has over 800 highly rated reviews on Amazon.

Glutamine Supplement Buying Guide

Review Overview

Overall Review Rating

4 / 5

In summary, Jarrow Formulas L-Glutamine is competitively priced in-line with our expectations for a 5 gram serving (around $0.20). This enables it to compete with companies such as MuscleTech, MusclePharm, and NOW Foods.

The largest 1000 g (35.3 oz) tub clearly offers the best value for money, and you’re getting far more glutamine per serving than their BCAA supplement can provide (500 mg).

Although Jarrow also manufacture glutamine capsules, we highly recommend buying the powder. Not only is it more affordable, but it also gives you more flexibility over the dose. You can either mix 5 g with water, or if you also supplement with Jarrow Formulas Whey protein, use it to top-up the 3 grams you get in each 23 g serving.

However, if you’re really on a strict budget and want the cheapest glutamine on the market, your best options are Nutricost, Body Fortress, MET-Rx, or Bulk Supplements. In each case choose the 1 kg tub/bag of L-glutamine powder.

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