✅✅ Increases absorption of calcium and phosphorus from the gut and also increases calcium deposition into the bone, which is critical for maintaining strong and healthy bones. ✅✅ This formula contains a high dose of D3 which is hard to find. This formula also includes zinc orotate which makes the D3 more effective.* ✅✅ D3 is needed by almost every cell in the body, but is especially crucial for the immune and skeletal systems.* ✅✅ Involved in the body's natural inflammation response, and increases the production of peptides and enzymes that are used by the immune system. ✅✅ Most people are deficient in vitamin D3. Dark skinned, overweight, old, sickly, and/or people who don't get a lot of sunlight need extra D3.* ✅✅ GMP quality assured — every aspect of our manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation). ✅✅ Packaged in the USA by a family owned and operated company since 1992. ✅✅ *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.