Country Life Vitamin D3 5000 I.U., 200-Softgel, AIDS IN THE ABSORPTION OF CALCIUM - Vitamin D3 helps with the absorption of calcium. D3 also helps to form and maintain healthy bones and teeth., IMMUNE HEALTH - Vitamin D has a remarkable role to play in your health, influencing nearly 3,000 of your 25,000 genes, and playing a critical role in your immune response, AUTHENTICITY OF INGREDIENTS - We always use a pure form of each ingredient and all our ingredients are laboratory tested to ensure accurate identification so you can be assured we use real, authentic ingredients., CLEANLINESS OF INGREDIENTS - Ensuring our ingredients are completely clean is a top concern. Our manufacturing facility was one of the first NSF registered GMP facilities in the industry and maintains strict quality control towards this end. We also ensure every one of our products are certified gluten-free., FRESHNESS OF INGREDIENTS - Our manufacturing plant is NSF-GMP certified to ensure the best, consistent product formulations, with quality inspection at each stage of manufacturing to ensure our products remain uniform from batch to batch so you know it works the same each dose.,