The form of glucosamine the gut lining and joints use directly.
£27.92
£0.47 per day £0.47 per capsule
In stock. Orders before 2pm Mon-Fri are dispatched same day.
★★★★★ "I won't go back to high street supplements. The difference in quality is something you can actually feel." Susie
N-Acetyl Glucosamine Capsules give you N-acetyl glucosamine, or NAG, the form of glucosamine the body uses in the mucus layer that lines the gut as well as in cartilage. Each capsule provides 250mg and you take one a day with food. One pot holds 60 capsules, which is a 60 day supply.
Glucosamine is a building block of cartilage and of the protective lining of the digestive tract, which your body makes from glucose. N-acetyl glucosamine is a different compound from glucosamine sulphate, the form most sold for joints, so people choose it when the gut is part of the picture or the sulphate form does not suit them.
N-Acetyl Glucosamine Capsules are most useful for:
Each capsule provides 250mg of N-acetyl glucosamine. There is nothing else in it apart from the vegetable capsule shell. NAG, N-acetyl-D-glucosamine, GlcNAc and acetylglucosamine are other names for it.
Take one capsule a day with food. For gut lining support the amount can rise to two or three capsules a day. If you take it to bind lectins, take it before meals rather than after, so the NAG is in the stomach when the food arrives.
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.
N-acetyl glucosamine or glucosamine sulphate?
Glucosamine sulphate is the form most sold for joints, usually made from shellfish shells, with sulphate and often salt added as a stabiliser. N-acetyl glucosamine is a different compound, the one the body uses in the gut's mucus layer as well as in cartilage, made here without shellfish. Choose the sulphate when the aim is joints only, or NAG when the gut lining matters or the sulphate form does not suit you.
How much NAG should I take a day?
Take one capsule a day, which gives you 250mg. For gut lining support, two or three capsules a day is the usual range.
When is the best time to take NAG?
With food, at any time of day. If you take it to bind lectins, take it before meals instead.
Can I take it with other supplements?
Yes. For the gut it is often taken alongside L-Glutamine Capsules, which fuel the cells of the gut lining, plus Combocillus Probiotic Capsules. Joints are where it pairs with Classic Collagen Peptides Powder, Hyaluronic Acid Capsules and Vitamin C Ascorbic Acid Powder, which contributes to normal collagen formation for the normal function of cartilage.
Does NAG have side effects?
N-acetyl glucosamine is well tolerated at these amounts. It contains no shellfish, so the allergy concern with glucosamine sulphate does not apply.
Why capsules rather than tablets?
A capsule is a cellulose shell around the powder, so it needs none of the binders or coating that hold a tablet together.
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 comes from the product label and the NIH National Center for Complementary and Integrative Health.
| Each capsule contains: | Amount | %NRV* |
|---|---|---|
| N-Acetyl Glucosamine | 250 mg | † |
† Nutrient Reference Value (NRV*) not established
Also listed as NAG, N-acetyl-D-glucosamine, GlcNAc, acetylglucosamine.
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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N Acetyl Glucosamine combines the ingredients listed in the table above. Where an ingredient carries an authorised health claim, it is stated on this page, and Nutri Tailor makes no claim beyond those.
Reduced stiffness within 4-6 weeks. Full benefits over 2-3 months.
Generally yes. Consult your provider for interactions.
The ingredients and amounts are listed in the table above. If you have a diagnosed joint condition, talk to your GP or pharmacist before adding a supplement.
Gentle movement often helps. If a joint is painful, swollen or hot, talk to your GP or a physiotherapist before changing what you do.
Glucosamine sulphate is the form most sold for joints, usually made from shellfish shells, and it comes with sulphate and often with salt as a stabiliser. N-acetyl glucosamine is a different compound, the form the body uses in the mucus layer of the gut as well as in cartilage, and it is made without shellfish here, so it suits people with a shellfish allergy or a sulphate sensitivity. People take the sulphate when the aim is joints only, and N-acetyl glucosamine when the gut lining is part of the picture or the sulphate form does not suit them.
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.
