From the manufacturer:
Supports Proper Joint and Connective Tissue Functions and Comfort**
Perna Mussel & Glucosamine MSM
Perna mussels contain naturally occurring essential fatty acids, amino acids, polypeptides, chelated minerals, numerous enzymes, vitamins, nucleic acids (RNA and DNA), as well as glycosaminoglycans (GAGS). Supports the health, comfort, flexibility and hydration of synovial fluid and connective tissues including joints, ligaments, tendons, cartilage and intervertebral disc.**
About Puritan’s Pride
For more than 40 years, Puritan's Pride has helped families achieve a lifestyle of wellness. Our vitamins and supplements are made with care from the highest quality ingredients. They are tested or inspected as many as 15 times throughout the manufacturing process. That's why you can shop with confidence. We take pride in our products and helping customers feel their best.