D-Glucosamine sulfate salt is a naturally occurring compound derived from the shells of shellfish such as shrimp and crab. Widely used in dietary supplements for joint health, particularly in managing osteoarthritis. It supports cartilage repair and helps reduce joint pain and inflammation. Often combined with chondroitin sulfate for enhanced effect. Commonly taken orally in capsule or tablet form. Also investigated for potential benefits in reducing inflammation associated with other joint-related conditions.