N-Acetyl-D-Glucosamine (NAG) is a high-purity amino monosaccharide with an assay of 98.0–102.0%, derived from chitin — the structural polysaccharide found in crustacean shells or produced through microbial fermentation. NAG is a critical building block of hyaluronic acid, glycosaminoglycans, and joint cartilage proteoglycans, making it an important structural ingredient for joint health, skin hydration, and gut barrier support formulations.
Unlike standard glucosamine salts (sulphate or hydrochloride), N-Acetyl-D-Glucosamine is more directly incorporated into hyaluronic acid synthesis pathways — making it particularly relevant for skin hydration and beauty supplement formulations where hyaluronic acid production support is desired.
Applications:
- Joint Health (cartilage support, joint mobility, osteoarthritis management supplements)
- Beauty Supplements (skin hydration, HA synthesis support, anti-ageing formulations)
- Gut Health (intestinal barrier integrity, leaky gut support formulations)
- Nutraceuticals (connective tissue health, wound healing, recovery supplements)
Key Features & Benefits:
- 98.0–102.0% assay – pharmaceutical grade purity
- Direct precursor for hyaluronic acid and cartilage proteoglycan synthesis
- Supports joint health, skin hydration, and gut barrier integrity
- Halal-certified & food-grade quality
- Suitable for capsule, tablet, and powder formulations
Not the same as glucosamine
N-acetyl-D-glucosamine (NAG) is a different compound from the glucosamine sulfate and glucosamine hydrochloride used in most joint supplements. It is not interchangeable with them on a label or in a formula, and studies on glucosamine salts cannot be applied to NAG.
Source matters for labelling
NAG is made either by breaking down chitin from crustacean shells or by microbial fermentation. Shell-derived material needs a shellfish allergen assessment. Fermentation-derived NAG can be positioned as suitable for vegetarians and for people avoiding shellfish. Ask for the source in writing, with an allergen statement.
Quality
NAG is a white crystalline powder that dissolves readily in water. Purity is confirmed by assay (usually HPLC) and specific optical rotation. It is often formulated alongside Hyaluronic Acid (see our hyaluronic acid & sodium hyaluronate guide) and Chondroitin Sulfate.
What to ask for on the certificate of analysis
- Source (shellfish chitin or fermentation) and allergen statement
- Assay by HPLC and specific optical rotation
- Loss on drying and residue on ignition
- pH of solution and chloride, if relevant to the process
- Heavy metals
- Microbiology: total plate count, yeast and mould, E. coli, Salmonella
- Halal certificate, batch number, manufacture and retest dates
