I recommend Real Doctor So Yeon Gol Mucopolysaccharide!

I am currently taking Real Doctor So Yeon Gol Mucopolysaccharide. Since I have a job that requires standing for long periods, I could really feel my knees getting worse, so I looked into it. Last time, it was on sale, so I bought some and have been taking it regularly. It is in the form of vitamin D, so absorption is good and it also helps reduce the risk of osteoporosis. You can take 2 tablets once a day with water. Taking it on an empty stomach may cause discomfort, so it is recommended to take it after meals, which I am doing.