L-Glutamine: Two Ingredients, 3.15 g a Scoop — and Who Should Not Take It

L-Glutamine — $29.90, 98 g, one scoop daily. One of the most straightforward products we sell.

The entire formula

• L-Glutamine: 3.15 g per 3.3 g scoop
• Silicon dioxide (anti-caking agent)

That is 95% pure active by weight. No flavouring, no sweetener, no filler. It is unflavoured, vegan and vegetarian.

At 98 g per container and 3.3 g per scoop, that is roughly 29 servings — about a month.

What glutamine is

Glutamine is the most abundant free amino acid in the human body. It is classed as conditionally essential: your body normally makes enough, but under significant physical stress — serious illness, major surgery, burns — demand can exceed supply.

It is a primary fuel source for the cells lining the intestine, which is why it appears in gut-focused products as well as sports ones.

Where we are careful

Glutamine is marketed hard for muscle recovery and for gut health. The honest position on each:

Muscle recovery: the evidence that supplemental glutamine improves recovery or performance in healthy, well-fed people who are already eating enough protein is weaker than the marketing suggests. If you are drinking a protein shake, you are already getting glutamine — it is in dietary protein.

Gut health: glutamine's role as fuel for intestinal cells is well established physiologically. Whether a supplement meaningfully changes gut outcomes in an otherwise healthy person is a different and less settled question. Our label supports maintaining normal integrity and function of the digestive tract* — and that is as far as it goes.

It does not treat leaky gut, IBS, or any digestive condition.

Who should not take it

This is the part worth reading twice, because glutamine has one genuinely important contraindication that most people have never heard:

• Anyone with liver disease, particularly cirrhosis. Glutamine metabolism produces ammonia, and a compromised liver may not clear it properly. This is a real concern — do not take glutamine if you have liver disease without your doctor's specific approval.
• Anyone with kidney disease, for related reasons.
• Anyone with a history of seizures, or taking anti-seizure medication — worth raising specifically.
• Anyone with a sensitivity to MSG. Glutamine and glutamate are related compounds, and some people who react to one are cautious about the other.
• Anyone pregnant, nursing, under 18, or with a known medical condition, without asking a doctor first.

How to take it

One scoop mixed with 6–8 oz of water or a beverage of your choice, daily. It is unflavoured, so it disappears into a protein shake or juice more comfortably than into plain water.

Do not exceed the recommended dose. Keep out of reach of children; store cool and dry.

What it is good for, plainly

If you want a single-ingredient amino acid supplement with nothing else in it, at a disclosed dose, this is a clean, honest product. If you are hoping it will transform recovery or fix a digestive problem, it will probably not, and we would rather you spent the $29.90 on something you actually need.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. All amounts quoted are taken from the product label. This article is general information, not medical advice.