NAG is a dietary supplement that supports joint comfort and skin hydration while also helping protect the digestive lining. (N-acetyl-D-glucosamine) acts as a precursor to hyaluronic acid, lubricating joints and hydrating skin. (The brand) maintains cGMP standards, uses vegan capsules, and checks ingredients for purity. (That blend of science, transparency and quality makes it simple to trust.)

Available Sizes & Variants:

120 vcaps N-A-G capsules – daily joint and digestive support in an easy-to-take capsule.

Benefits & Features:

• Supports joint comfort as a precursor to hyaluronic acid.
• Promotes hydration in the skin and synovial fluid for smoother movement.
• Helps form a protective layer that supports digestive tract lining.
• Gluten free and non GMO capsules, suitable for many diets.
• Regular use may support joint comfort and digestive mucosal protection, with improvements often seen after four to eight weeks of steady daily use.

Jarrow Formulas has long stood for science led, transparent formulations. (N-A-G) is a precise, single-ingredient capsule in vegan packaging, designed as a targeted precursor to hyaluronic acid that lubricates joints and hydrates skin. The brand sources ingredients under strict cGMP standards and emphasises purity and strength. For a well rounded routine, customers often complement it with magnesium glycinate, probiotics, or a vitamin d supplement.

N-Acetyl-D-Glucosamine, N-Acetyl-D-Glucosamine

• GTIN: 790011190028
• Manufacturer: Jarrow Formulas
• Categories: Best SellersJarrow Formulas
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Take 1 capsule 1 to 2 times per day, or as directed by your healthcare professional. Store in a cool, dry place. Consult a doctor before use if you are pregnant, nursing, under 18 years of age, or have a medical condition; discontinue use if any adverse reactions occur.

Please consult the product packaging for accurate instructions on how to use the product.

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: N-Acetyl-D-Glucosamine

N-Acetyl-D-Glucosamine is an amino sugar and a physiological precursor to hyaluronic acid, a molecule involved in joint lubrication and tissue hydration. It is derived from glucose and L-glutamine and is typically supplied in a form that's suitable for taking. This formula also includes a protective mucosal layer via glycocalyx formation, supporting gut lining integrity as described in the available research context.

Research-context notes suggest this ingredient acts as a precursor to hyaluronic acid that supports synovial fluid lubrication and skin hydration. It is commonly used in supplement formulas to support these biological roles.

What Does N-Acetyl-D-Glucosamine Do?

N-Acetyl-D-Glucosamine helps in producing hyaluronic acid, which helps with joint lubrication and hydration of tissues. It also forms a protective layer that helps maintain the integrity of the digestive tract lining, aligning with EFSA-supported mechanisms.

Dr. Salvatore from a university notes that this amino sugar can support these physiological processes, with findings from clinical settings indicating its involvement in mucosal protection and joint-related functions.

This product is not intended to diagnose, treat, cure, or prevent any disease.

When choosing a partner for this supplement, our medical team prioritised Jarrow Formulas for its solid commitment to high-quality science and strict manufacturing principles. This focus on robust quality control is a core part of how Jarrow Formulas maintains product integrity across batches. This brand is also recognised for its non-GMO and gluten-free product lineage, reinforcing a reputation for consistency and reliability in quality manufacturing. To understand how we assess a brand, this is the kind of rigorous framework we apply when evaluating supplier relationships, including compliance with our ingredient quality and purity standards. This brand was evaluated by our team of medical experts for alignment with our standards.

Why this matters for Jarrow Formulas N-A-G is that N-Acetyl-D-Glucosamine acts as a precursor to hyaluronic acid, supporting joint lubrication and mucosal protection, with the product delivered in a vegan capsule and produced under clearly defined manufacturing controls. Choosing Jarrow Formulas reflects our belief that sourcing practices, transparent quality protocols, and a science-led approach best serve our customers, offering a dependable product fit for this supplement category and strong assurance of potency and purity.