Osteoarthritis is a chronic joint disease affecting cartilage and surrounding tissues, now increasingly common even among younger people. In China, about 140 million people suffer from it, driving strong demand for joint health supplements. Glucosamine, a natural amino sugar, remains one of the most popular ingredients for supporting cartilage structure and joint function. Research suggests it may help maintain cartilage, support collagen production, and modulate inflammation. Different forms—glucosamine hydrochloride, sulfate, and N-acetyl glucosamine—are widely used in health products. This summary reviews osteoarthritis trends, consumer demand, glucosamine's biological roles, and the characteristics of its various forms in joint health management.
Osteoarthritis: A Growing Health Concern
Osteoarthritis is a complex chronic disease that is considered to result from inflammatory mediators produced by the synovium, cartilage, and subchondral bone, ultimately causing cartilage damage. The disease can occur in one or multiple joints throughout the body. Clinically, it commonly affects the hand joints, knee joints, hip joints, ankle joints, and spine. Its main clinical manifestations include pain in affected joints, short-term morning stiffness (usually improving within 30 minutes), and restricted mobility.
With increasing health awareness, bone and joint health issues have gradually attracted widespread public attention. A large patient population and a clear trend toward younger onset have made joint health problems an important health issue that cannot be ignored.
The Number of Osteoarthritis Patients Has Reached 140 Million, and the Disease Is Becoming More Common Among Younger People
The number of osteoarthritis patients in China has reached 140 million. Previously considered a disease mainly affecting older adults, osteoarthritis is now showing a significant trend toward younger populations, with young people also facing increasing challenges related to joint health.
The prevalence of knee osteoarthritis among middle-aged adults aged 30–45 years in China has reached 11%, indicating that joint problems are no longer exclusive to elderly populations.
Against this background, on one hand, China has continuously introduced relevant health guidance policies to promote osteoarthritis prevention, health education, and the standardized development of related health industries. On the other hand, public attention toward joint care has continued to rise, with related topics maintaining high levels of discussion across online platforms.
According to CBNData, joint health-related topics on major social media platforms have accumulated more than 14 billion views. Among these topics, discussions related to “knee pain,” “joint pain,” and “arthritis” have shown particularly high popularity, demonstrating the strong public demand for joint health management.
The large patient population and increasing demand for daily joint care have directly accelerated the expansion of the joint health supplement market. When experiencing symptoms such as joint soreness and stiffness, nearly 70% of consumers choose joint health supplements for daily care and management, with glucosamine being the most recognized ingredient in the current market.
According to market predictions, China’s glucosamine market size is expected to reach RMB 9.335 billion in 2025, accounting for nearly one-fifth of the global market share. China has become one of the world’s major glucosamine consumption markets, and the joint health sector has officially entered a new stage of billion-yuan growth.
Glucosamine: The “Repair Material” for Joints
Glucosamine is a naturally occurring amino sugar and an important functional monosaccharide in the human body. It is formed by replacing one hydroxyl group of glucose with an amino group. This compound generally exists in the forms of N-acetyl derivatives (chitin), N-sulfate, and N-acetyl-3-O-lactic ether (cell wall) in microorganisms, animal-derived polysaccharides, and conjugated polysaccharides. It is a commonly used joint health ingredient in functional foods and dietary supplements.
Bone mineral density refers to the mineral density of bone tissue and is a key indicator for evaluating bone health. Clinically, common approaches to improving bone mineral density include calcium supplementation, regulation of estrogen levels, and enhancement of osteoblast activity.
Naturally enriched in articular cartilage, glucosamine plays an important role in maintaining joint health. On one hand, it can promote cartilage collagen synthesis and maintain the structural integrity of articular cartilage. At the same time, it can induce osteoblasts to express higher levels of osteopontin and osteocalcin, accelerate calcium deposition in bones, and improve osteoporosis.
On the other hand, glucosamine can reduce the expression of inflammatory transcription factors and decrease the release of hydrolytic enzymes such as lysosomal enzymes, collagenase, and phospholipase A₂, thereby helping prevent the degradation and destruction of the cartilage extracellular matrix and providing protective effects for bone and joint health.
Human clinical trials have confirmed that glucosamine can help relieve inflammation associated with knee osteoarthritis and improve knee joint function. The research team led by Liu Huina selected subjects with mild, moderate, and severe knee osteoarthritis and administered oral glucosamine hydrochloride capsules as an intervention.
The results showed that the treatment could reduce the levels of inflammatory factors such as IL-1β and PGE-2, increase synovial fluid secretion, and improve synovial fluid viscosity. It effectively alleviated local inflammation and improved knee joint function, demonstrating notable overall clinical efficacy.
Spanning 20 Years: The Development History of Glucosamine for Joint Care
Glucosamine is not a newly emerging joint health ingredient. Its application in China has already reached a mature stage. Looking at the development of the glucosamine market, glucosamine hydrochloride and glucosamine sulfate are currently the two major forms available on the market.
With continuous advances in raw material technology, N-acetyl glucosamine (NAG glucosamine), featuring improved characteristics, has become a new-generation upgraded option in the glucosamine market.
1) Glucosamine Hydrochloride — Helping Relieve Joint Discomfort
Glucosamine hydrochloride, chemically known as 2-amino-2-deoxy-D-glucose hydrochloride, is a classic pharmaceutical ingredient used clinically for the prevention and improvement of osteoarthritis.
In China, large-scale pharmaceutical production and widespread application of this ingredient have already been achieved.
The core advantage of glucosamine hydrochloride is its targeted support for joint problems. It can effectively help relieve symptoms associated with osteoarthritis, including joint pain, stiffness, and discomfort during movement, providing intervention for existing joint damage-related issues.
However, it also has certain limitations. This ingredient has relatively stronger irritation, and long-term intake may cause gastrointestinal discomfort and other adverse reactions. Its tolerance is relatively lower, making it less suitable for long-term daily health maintenance. It is more commonly used for short-term symptom management.
2) Glucosamine Sulfate — Safe and Long-Term Joint Care
Glucosamine sulfate is the sulfate form of D-glucosamine and belongs to a naturally occurring amino monosaccharide. This ingredient was successfully isolated by French scientists in 1876. In 1964, it was approved for the treatment of arthritis in Italy, and related preparations were officially launched in Spain in 1996.
After decades of clinical validation, glucosamine sulfate has now been approved in more than 70 countries worldwide as a clinical treatment ingredient for osteoarthritis. It has a wide range of applications and high market recognition.
In April 2024, glucosamine sulfate products were officially approved for marketing as pharmaceutical products in China, further improving the domestic market landscape for joint health ingredients.
Compared with glucosamine hydrochloride, glucosamine sulfate has fewer side effects and improved safety, making it more suitable for consumers seeking long-term daily joint health support.
3) N-Acetyl Glucosamine (NAG Glucosamine) — A New Food Ingredient
N-acetyl glucosamine (NAG glucosamine) is an amino sugar derivative formed through structural modification of glucose molecules. Its molecular structure contains an acetylated amino group. Multiple studies have demonstrated that NAG glucosamine has significant potential in promoting bone tissue repair.
On August 5, 2024, China’s National Health Commission officially approved NAG glucosamine as a new food ingredient and specified that it can be widely applied in five categories of products, including milk and dairy products, beverages, jelly products, candies, and pastries.
NAG glucosamine is an amino sugar derivative formed through structural modification of glucose molecules, containing an acetylated amino group within its molecular structure. Existing studies have shown that NAG glucosamine has significant effects in promoting bone tissue repair.
NAG glucosamine features advantages including efficient absorption and safety. It provides nutritional support to joints, helps relieve joint discomfort, and enables efficient, safe, and long-term joint health maintenance without unnecessary burden.
References
[1] Yi Mengjun, Li Jiangtao. Current Status and Research Progress in the Diagnosis and Treatment of Osteoarthritis. Advances in Clinical Medicine, 2024, 14(10), 767–774.
[2] https://www.cbndata.com/report/3355/detail?isReading=report&page=5
[3] Chi Hailin, Li Feifei, Zhang Liwei. Application and Research Progress of Glucosamine Compounds in Functional Foods. Food Industry Technology, 2023, 44(8): 437–445.
[4] https://www.kepuchina.cn/article/articleinfo?business_type=100&classify=0&ar_id=634374