Priced per 5 g

L-glutamine price comparison

As of Nov 7, 2026, the cheapest L-glutamine on our list is Nutricost L-Glutamine Powder at $0.17 per 5 g, 50% less per 5 g than Optimum Nutrition.

What is it?
The most common amino acid in your body, and a fuel for gut and immune cells.
Why do people take it?
People take it for gut support and workout recovery.
What does the research say?
Limited evidence. Your body makes plenty. Most research is in hospital patients, and benefits for healthy people are not well shown.

General information, not medical advice. Check with a doctor or pharmacist if you are pregnant, take medication or have a health condition.

5 prices from 5 stores, checked Nov 7, 10:01 AM ET

How we price it

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Cheapest glutamine vs Optimum Nutrition

Popular brand

Optimum Nutrition Glutamine Powder · UnFlavored · 194 Servings

$0.33 per 5 g

$64.49 a container

Best for other needs

5 productsPrices checked Nov 7, 10:01 AM ETStore price at checkout is final

Costs less than Optimum Nutrition

A row goes up only when the store states the amount per serving and the weight or count. Only plain L-glutamine. Blends and flavored mixes are left off. Affiliate links, when we have them, don't change the price.

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Cheaper alternatives

Brand vs brand

L-glutamine prices: questions

What is the cheapest L-glutamine right now?
As of Nov 7, 2026, the cheapest L-glutamine on our list is Nutricost L-Glutamine Powder at $0.17 per 5 g, 50% less per 5 g than Optimum Nutrition. Prices on the list run from $0.17 to $0.33 per 5 g.
What is the cheapest third-party tested L-glutamine?
None of the L-glutamine products on our list today is listed in a testing program's database that we check (NSF, USP, Informed Sport, Informed Choice or IFOS). We mark a product as tested only after finding it in that database.
How much does L-glutamine cost per 5 g?
The median price on our list is $0.27 per 5 g, across 5 prices from 5 stores. Optimum Nutrition, a brand people already buy, costs $0.33 per 5 g.
How do you compare L-glutamine prices?
Prices shown per 5 g of L-glutamine, not the scoop or capsule count. That is a unit for comparing prices, not a recommendation of what to take. We divide each store price by the amount in the container, so a big tub and a small bottle compare fairly.
How often are prices checked?
Once a day, from each store's own page. The last check was Nov 7, 10:01 AM ET. We don't sell the products, and affiliate links never change the order.
Every glutamine product we price (5)