Osteo-Bi-Flex Joint Health Supplement Vitamin D / Glucosamine 400 IU - 1500 mg Strength Caplet - 30 Count BoxEach Osteo Bi Flex tablet contains 400 IU vitamin D: Vitamin D promotes calcium absorption in the gut and maintains adequate serum calcium and phosphate concentrations to enable normal bone mineralization Joint health supplement also contains glucosamine a compound found in cartilage that is made in the lab from the shells of shellfish: It may provide pain relief for those with osteoarthritis 5 Loxin Advanced is a novel composition extracted from the