Here are three bags of Yawat's Proteoglycan supplements. "Yawat Domestic Proteoglycan (Food with Function Claims)" is a supplement containing proteoglycan derived from salmon cartilage and type II collagen. It has been reported in human trials to improve movements involving bending and extending the knee. Recommended for middle-aged and elderly individuals who experience discomfort when sitting seiza-style, going up and down stairs, or standing up. With an easy daily intake of one tablet, it supports an active lifestyle.