The amino acid the gut lining uses as fuel.
£23.28
£1.46 per day £0.23 per capsule
In stock. Orders before 2pm Mon-Fri are dispatched same day.
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L-Glutamine Capsules give you the amino acid the gut lining uses as fuel, on its own. Each capsule provides 400mg of L-glutamine and you take two capsules three times a day before meals. One pot holds 100 capsules, which lasts about 16 days at that amount.
Glutamine is the most abundant amino acid in your body and the main fuel for the cells that line your gut and for immune cells. Your body makes it, but demand rises under stress, after illness and after hard training, which is when people top it up.
L-Glutamine Capsules are most useful for:
Each capsule provides 400mg of L-glutamine. There is nothing else in it apart from the vegetable capsule shell. Free form L-glutamine and Gln are other names for it.
Take two capsules three times a day, 20 to 30 minutes before eating, so the glutamine reaches the gut lining before food arrives. For sports recovery take four capsules twice a day, one dose after exercise and the other before a meal, which gives 3,200mg a day.
The capsules are suitable for vegans and vegetarians. They are free from gluten, dairy and nuts.
The capsules are made in the UK in a GMP certified cleanroom facility accredited to ISO 9001 and ISO 14001. Every batch is traceable from raw material to finished product. Like every supplement Nutri Tailor stocks, they are practitioner grade and guaranteed additive free.
Is glutamine the same as glutamate?
No. L-glutamine is the amino acid, while glutamate is a different compound and the flavouring in monosodium glutamate, so the two are not interchangeable.
How much glutamine should I take a day?
Take two capsules three times a day, which gives you 2,400mg. For sports recovery, four capsules twice a day gives 3,200mg.
When is the best time to take glutamine?
Twenty to thirty minutes before meals, so it reaches the gut lining first. After exercise is the other time, if you take it for recovery.
Can I take it with other supplements?
Yes. For the gut it is often taken as part of a wider routine with a probiotic such as Combocillus Probiotic Capsules. Recovery is where it sits alongside Unflavoured Whey Protein Isolate Powder, which gives your muscles the protein they need to grow and stay strong.
Does glutamine have side effects?
Glutamine is an amino acid your body makes and is well tolerated at these amounts.
Capsules or powder?
Powder is the cheaper way to take the 5g and upward amounts used in gut and recovery routines. These capsules give 400mg each, which suits people building a moderate amount across meals without measuring.
Order before 2pm Monday to Friday and your capsules are dispatched the same day from the UK. Standard UK delivery by Royal Mail Tracked 48 takes 2 to 4 working days and costs £3.35, or it is free when you spend £35 or more. Faster delivery is available at checkout. Nutri Tailor also ships worldwide, with duties and taxes shown before you pay. You can return unopened items within 30 days of delivery. New customers get 10% off their first order.
Nutri Tailor is rated 4.6 out of 5, "Excellent", on Trustpilot. Every supplement is chosen by experienced nutritional therapists. Kasia Key, Registered Associate Nutritionist, says: "I use Nutri Tailor for myself and my clients because you can be certain that their supplements are industry leading quality."
The information on this page draws on the NIH Office of Dietary Supplements and the European Food Safety Authority.
| Each capsule contains: | %NRV* | |
|---|---|---|
| L-Glutamine | 400 mg | 38% |
† Nutrient Reference Value (NRV*) not established
Also listed as glutamine, free-form L-glutamine, Gln, L-glutamine.
Suitable for men.
Suitable for women.
Consult your healthcare practitioner before use if pregnant or breastfeeding.
Suitable for vegetarians.
Suitable for vegans.
No gluten containing ingredients.
No nut containing ingredients.
No dairy containing ingredients.
If you are taking prescribed medicines or under medical supervision, consult your healthcare practitioner before use.
Store in a cool dry place.
Keep out of reach of children.
This information is not a substitute for advice from a healthcare practitioner.
This product should not be used as a substitute for a varied diet.
Once opened, consume within 3 months.
This product is in stock. Orders placed before 2pm Mon-Fri are dispatched the same day.
UK Standard Delivery (Royal Mail Tracked 48, 2 to 4 working days) is £3.35, or free on orders of £35 or more. Express Delivery (Tracked 24, 1 to 2 working days) is £5.65, free on orders of £60 or more. Next Day Delivery (Royal Mail Special Delivery) is £8.50, free on orders of £100 or more; order before 2pm on a working day for next-working-day arrival. We dispatch Monday to Friday.
Delivery and worldwide shipping options are shown at checkout, with duties and taxes included.
Unopened items in their original packaging can be returned within 30 days of delivery.
New customers get 10% off their first order.

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Glutamine supports gut lining integrity and digestive function.
Initial improvements within 1-2 weeks. Full soothing takes 2-3 months.
Yes, gut support often works best as part of a protocol.
As the label directs, with food unless the label says otherwise. If you have a diagnosed digestive condition or take prescribed medicines, talk to your GP or pharmacist first.
Bloating, irregular bowels, food sensitivities, skin issues, and fatigue can all indicate gut dysfunction.
L-glutamine is the amino acid; glutamate is a different compound and the flavouring in monosodium glutamate, so the two are not interchangeable. Glutamine is sold as one form, so the choice is between powder and capsules. Powder is the cheaper way to take the 5 g and upward doses used in gut and recovery protocols and dissolves in water; these capsules give 400 mg each, which suits people building a moderate amount across meals without measuring.
Tablets need binders, fillers and a coating to hold their shape. A capsule is a cellulose shell around the powder, so it carries no binders and breaks down quickly once swallowed.
