Ajinomoto L-Glutamine Review

Editor's Review: 3.5 / 5.0

What You Should Know

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Protein Factory sells several Ajinomoto products, including Ajinomoto L-Glutamine. L-glutamine is a common ingredient in bodybuilding supplements as it support muscle growth and help speed up muscle recovery between workouts. There is evidence that L-glutamine levels are reduced during times of intense exercise, like bodybuilding. This is important information with clinical trials backing these claims. Unfortunately, Protein Factory chose a study on the connection between increased cell mass and glutamine in AIDS patients. This study has nothing to do with bodybuilders or intense athletes.

Products produced and sold by Protein Factory are available for direct order from the official website. Despite having hundreds of products for sale, we could not find any with testimonials, reviews or free trials. The information provided about Ajinomoto L-Glutamine is limited to an excerpt from the irrelevant clinical study.

List of Ingredients


Product Features

Protein Factory does not list the ingredients in Ajinomoto L-Glutamine. We can assume l-glutamine is the main ingredient, but there must be other ingredients that keep the product in powder form. With 1 gram of carbohydrates and 4 grams of protein, we assume the glutamine is packed in some form of protein powder.

So what does L-glutamine offer the bodybuilder? According to a bodybuilding website, bodybuilders take L-glutamine to support the metabolism of protein and boost performance. L-glutamine is an amino acid that helps the body metabolize protein. Protein is essential for muscle growth. Most protein powder pre-workout and post-workout shakes will include L-glutamine for this purpose. How much L-glutamine does the body need? That information is not provided by Protein Factory, nor is the consumer told how much L-glutamine is available in Ajinomoto L-Glutamine.

L-glutamine supplementation is linked to stomach upset and nausea. It is suggested that bodybuilders take smaller amounts of L-glutamine at first to ease into regular supplementation. Again, we are left without answers because Protein Factory does not reveal how much L-glutamine is included.

Ajinomoto L-Glutamine from Protein Factory sells for $29.99.

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  • L-glutamine is essential for intense athletes and bodybuilders.
  • Ajinomoto has been around for more than 90 years.
  • Consumers can order the supplement directly from Protein Factory.


  • The ingredient list is not complete.
  • The consumer has no idea how much L-glutamine is included in the supplement.
  • There are potential negative side effects with taking L-glutamine.
  • No testimonials are provided by consumers.
  • Protein Factory does not offer a free trial.
  • There is no money-back guarantee for Protein Factory products.


L-glutamine may be essential, but not from Protein Factory. The company needs to tell more information about the supplement before bodybuilders or other athletes will trust the company and the supplement. If Ajinomoto L-Glutamine is a superior product, Protein Factory does not sell that fact to consumers.

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