Glucosamine is a compound naturally produced by the body, mainly found in cartilage and helps repair it. It is commonly sold as a supplement, often derived from shellfish shells or produced artificially. Taking glucosamine supplements can help reduce joint pain, such as arthritis. It may also have antioxidant effects that improve eye health. Additionally, glucosamine may help reduce chronic inflammation, which is linked to health issues like heart disease, diabetes, and arthritis. Early studies suggest that glucosamine supplements may help prevent the progression of post-menopausal osteoporosis by supporting healthy bone growth. However, there are risks such as triggering shellfish allergies and affecting blood sugar levels. If you have diabetes or shellfish allergies, consult a doctor before using glucosamine supplements.