21st Century Calcium 500 + D3 Plus Extra Tablets - 400 ct. Calcium is an important mineral for supporting bone health.* Calcium also works to support muscle and nerve function.* Vitamin D3 is added to assist with calcium absorption and as support for immune function.* Adequate calcium and vitamin D3 as part of a healthful diet, along with physical activity, may reduce the risk of osteoporosis in later life. No added sugar, yeast, preservatives or artificial flavors. Easy to swallow. *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.Directions: As a dietary supplement, take one (1) caplet twice daily with any meal for maximum results, or as directed by your healthcare provider. Do not exceed recommended dosage. Individual results may vary. Store at room temperature.Ingredients: 1 Caplet: Vitamin D3 (Cholecalciferol) 600 IU; Calcium (Oyster Shell) 500 mg; Croscarmellose Sodium; Cellulose; Polyvinyl Alcohol; Titanium Dioxide; Stearic Acid; PEG; Talc; Magnesium StearateWarnings: Keep out of reach of children. Contains a shellfish ingredient (oyster shell).