Compare every L-Glutamine product across UK retailers on Suppio, ranked by true value - price per active dose, not pack size. Prices refreshed daily.
Most abundant amino acid, supports gut lining integrity and muscle recovery
We rank L-Glutamine by price per 5g - not by pack size - so a bigger tub with a worse price per dose can't outrank a smaller one that's actually cheaper.
What it is
L-Glutamine is an amino acid, which is a basic building block used by the body to create proteins. It is the most abundant amino acid found in the human body.
Why it's used
It is primarily used for two main reasons:
Gut health: It helps support the integrity of the gut lining, which is the barrier that prevents unwanted particles from leaking into the bloodstream.
Muscle recovery: It is used to help the body repair muscle tissue after intense exercise.
How it's made
To create the supplement, manufacturers typically use a process called fermentation. They use specific bacteria or fungi to break down a sugar source, which produces the amino acid. This substance is then filtered, purified, and dried into a powder that can be put into capsules or sold as a loose powder.
What it typically costs
L-Glutamine is generally mid-range in price. This is because the raw materials used in the fermentation process are readily available and the manufacturing method is standard across the industry, preventing it from being overly expensive while remaining more costly than the simplest bulk fillers.
Dosage by purpose
Purpose
Typical studied dose
Evidence
exercise adaptation and recovery
0.15 to 0.9 grams per kilogram of bodyweight per day or between 0.6 and 20 grams per day
emerging
reducing mucositis grade and attenuating weight loss in cancer patients
Suppio matches identical products across UK retailers by barcode, then ranks by price per active dose rather than sticker price. Value rankings only ever include listings Suppio has independently verified against the live retailer page - unverified data is shown on each product’s own page but excluded from ranking.
Prices across our retailer network are refreshed at least daily.
Most abundant amino acid, supports gut lining integrity and muscle recovery
How does Suppio calculate the best-value L-Glutamine?
We rank L-Glutamine by price per 5g - not by pack size - so a bigger tub with a worse price per dose can't outrank a smaller one that's actually cheaper.
Are these prices verified?
Suppio matches identical products across UK retailers by barcode, then ranks by price per active dose rather than sticker price. Value rankings only ever include listings Suppio has independently verified against the live retailer page - unverified data is shown on each product’s own page but excluded from ranking.
How often are L-Glutamine prices updated?
Prices across our retailer network are refreshed at least daily.