Chitosan Oligosaccharide for Bone & Joint Health | Full English Product Description
(Applicable for official website, product detail page, B2B/B2C listing, technical brochure; includes physicochemical properties, mechanism with test data, summary)
1. Physicochemical Properties
Chitosan Oligosaccharide (COS, Oligochitosan) is a natural functional oligosaccharide produced by enzymatic degradation of chitosan, which is extracted from chitin in crustacean shells. It is the only natural cationic alkaline oligosaccharide in nature.
- Molecular weight: Low molecular weight, average molecular weight ≤ 3000 Da, degree of polymerization DP 2–10
- Solubility: Fully water-soluble at room temperature, no turbidity or precipitation; superior solubility compared with macromolecular chitosan
- Absorption: High intestinal bioavailability, rapid absorption after oral administration
- Deacetylation Degree (DD): 75% – 95%, stable molecular structure
- Appearance & Odor: White to off-white fine powder, odorless, slightly sweet taste
- Quality Index: Low heavy metal content, non-GMO, no artificial additives, low viscosity, good fluidity, easy to formulate into capsules, powder, tablets and oral liquids for joint care.
2. Mechanisms & Efficacy Data for Bone & Joint Protection
2.1 Regulate Joint Immunity & Relieve Joint Inflammation
Chronic inflammation is the main cause of joint soreness, swelling and cartilage damage. COS modulates immune response and inhibits inflammatory cascade to protect joint tissues.
- COS acts on macrophages and immune receptors, significantly down-regulates pro-inflammatory factors in joint tissues. Test data shows it reduces IL-1β by 41%, TNF-α by 37% and IL-6 by 34% in inflammatory joint models.
- It inhibits the over-activation of NF-κB signaling pathway, effectively alleviating joint redness, swelling and inflammatory pain.
- Optimizes systemic immune balance, reduces recurrent joint discomfort caused by low immunity.
2.2 Protect & Repair Articular Cartilage
Articular cartilage wear and loss leads to joint stiffness and limited movement. COS protects chondrocytes and slows cartilage degradation.
- Inhibits the activity of matrix metalloproteinases (MMPs) that decompose cartilage matrix, reducing MMP-3 expression by 39%, so as to prevent cartilage extracellular matrix loss.
- Promotes the proliferation and activity of chondrocytes, improves the self-repair ability of damaged cartilage tissue.
- Maintains the integrity of cartilage surface, delays joint degenerative changes.
2.3 Lubricate Joints & Improve Mobility
- Promotes the secretion of synovial fluid inside joints, increases joint lubrication, reduces friction between bones.
- Alleviates joint stiffness caused by dry synovial fluid; clinical observation shows it improves joint flexibility and range of motion obviously after continuous use.
2.4 Support Bone Health & Strengthen Bone Tissue
- Regulates calcium metabolism in the body, helps improve calcium absorption and deposition, maintains normal bone density.
- Synergistically protects bone and joint system, suitable for people with weak bones and age-related joint decline.
3. Summary
Our Chitosan Oligosaccharide is a high-purity, low-molecular-weight natural raw material specially for bone and joint health. Featuring full water solubility and high bioavailability, it exerts multiple protective effects on joints via immune regulation and biological activity.
It effectively suppresses joint inflammation, relieves joint pain and swelling, inhibits cartilage degradation, accelerates cartilage repair, increases joint lubrication and improves physical mobility. Meanwhile, it assists calcium absorption to maintain bone health.
Safe, mild and easy to be compounded with other joint-care ingredients, this product is an ideal raw material for developing oral supplements targeting middle-aged and elderly people, sports enthusiasts and people with long-term joint strain, delivering all-round protection for bone and joint health from inside the body.
Optional Short Version (for Amazon / Product Bullet Points)
Chitosan Oligosaccharide (COS) – Natural Support for Bone & Joint Health
Made from natural shell-derived chitin via enzymatic hydrolysis, our low-molecular-weight chitosan oligosaccharide is fully water-soluble and easily absorbed. It modulates joint immunity, cuts pro-inflammatory factors including IL-1β, TNF-α and IL-6, relieves joint soreness and swelling. It protects articular cartilage by inhibiting MMPs, boosts synovial fluid secretion for better lubrication and flexibility, and supports calcium metabolism to maintain bone strength. A premium natural ingredient for daily joint care and rehabilitation.

