This product contains salmon nasal cartilage proteoglycan. Proteoglycan derived from salmon nasal cartilage supports the flexibility and mobility of the knee joint. Suitable for people who are concerned about walking or going up and down stairs. As the burden on the knee increases, such as muscle weakness due to aging, the number of elderly people who feel discomfort in the knee increases. One of the causes is a decrease in proteoglycan in articular cartilage. Research on Hirosaki University and others developed a technique for extracting proteoglycan from nasal cartilage in the head of the frog, and obtained a patent (No. 3731150). Furthermore, for the first time in Japan (reported on February 23, 2017), for functional labeling foods containing salmon nasal cartilage-derived proteoglycan alone, the functionality is evaluated for the first time in clinical trials (studies targeting humans) using the final product. doing.