As we age, everyone needs to pay attention to joint health. If your knees click when you walk or hurt when you climb stairs, you may need additional joint support. A joint is the point of connection between two bones where they can move and is made up of cartilage and lubricating fluid. The main structure of cartilage includes water, chondrocytes, type II collagen, hyaluronic acid, proteoglycans, glucosamine, etc. There is also a lot of hyaluronic acid and proteoglycan in the lubricant. When cartilage degenerates or lubrication is insufficient, you should supplement with more non-denatured type II collagen, glucosamine, chondroitin, collagen, hyaluronic acid, and vitamin C. When joints are inflamed, some literature recommends eating more non-denatured type II collagen, MSM, proteoglycans, and curcumin to fight inflammation and relieve pain. The following is an analysis of the main ingredients of several joint health products.
1. Undenatured type II collagen (UC-II)
Undenatured type II collagen (UC-II) is part of the composition of joint cartilage and lubricating fluid. The difference between so-called non-denatured and denatured collagen can be seen in the figure below:
Denatured collagen: The picture on the right shows that it is made after high temperature and acid hydrolysis, and the tertiary and quaternary structures of the protein are completely destroyed! Non-denatured (prototype) collagen: The left picture uses patented low-temperature technology to completely preserve the original triple helix structure of collagen, so it can most effectively achieve body benefits. ( source )

Duobao Glucosamine + Green Turpentine + Chondroitin contains the recommended 40 mg (UC-II), which can supplement the necessary nutrients.
2. Glucosamine + Chondroitinsulfat
Glucosamine and chondroitin are components of joint cartilage and are often taken together in joint health supplements. These two ingredients can stimulate and restore the metabolism of joint cartilage. Duobao Collagen Glucosamine contains 800 mg of glucosamine and 100 mg of chondroitin.
Duobao Collagen contains 700 mg of glucosamine and 50 mg of chondroitin. Both products are focused on maintaining mobility.
3. Collagen (Kollagen hydrolysate)
Collagen is a protein that makes up cartilage, bones, tendons, etc. Collagen helps repair cartilage and compensate for cartilage wear. Duobao Aiguansu Collagen Glucosamine contains 11 grams of collagen, which is suitable for maintaining joints. Duobao High Unit Collagen Joint Health contains 200 mg to assist in the normal cartilage process.
4. Hyaluronic acid
Hyaluronic acid is part of the composition of joint cartilage and lubricating fluid. Hyaluronic acid can help smooth joint movement and reduce wear between joint cartilage. Oshiba Collagen Glucoside Amino Acids for Relieving Joint Pain and Swelling contains 50 mg of hyaluronic acid and is specifically used to treat osteoarthritis. Duobao High Unit Collagen Joint Care contains 15 mg of hyaluronic acid to keep joints functioning smoothly. And Reguler Guanlijie contains 60 mg of hyaluronic acid, which has the effect of nourishing joints.
5. MSM (Methylsulfonylmethane)
Methylsulfonylmethane (MSM) is an organic sulfur compound that provides sulfur needed for many body processes. MSM has anti-inflammatory properties and can reduce pain and stiffness during arthritis attacks. Duobao High Unit Collagen Joint Health contains 100 mg of MSM, which can keep joints functioning normally. In contrast, Duobao Glucosamine + Green Turpentine + Chondroitin contains 500 mg of MSM, which is designed to strengthen joint function. In addition to Duobao, Ruigule Guanlijie contains 300 mg of MSM. Between the two Duobao options, it mainly supplements the nutrients needed for joints.
https://munich-stars.com/shop/regulatpro-arthro
6. Proteoglycan (Salmon nasal cartilage)
Proteoglycans are composed of proteins and glycosaminoglycans, and contain mucopolysaccharides. Proteoglycans have anti-inflammatory properties and can reduce knee pain and stiffness. Bioprap Squalene Cartilage Extract contains 1500 mg of proteoglycans that can maintain joint function.
7. Curcumin
Turmeric is a spice that is often seen in meals. Unfortunately, curcumin is not well absorbed from food. In addition to its flavoring function, curcumin also has anti-inflammatory effects and can relieve arthritis pain. Herbalist Curcumin contains 340 mg and is supplemented with black pepper extract Bioperine® to boost the absorption of curcumin and improve its anti-inflammatory effects.
8. Vitamin C
The most familiar vitamin C can also be used to maintain the knees. Vitamin C contributes to normal collagen formation and causes normal cartilage function. Gelita CH-Alpha® PLUS Collagen Oral Liquid contains 60 mg of vitamin C and is suitable for a wide range of indications. Osra relieves joint pain and swelling with collagen glucosamine amino acids and contains 476 mg of vitamin C, which is used to repair the damage caused by osteoarthritis.