"Vitamin D functions as a hormone, a chemical messenger with widespread effects in the human body.* It is important for optimal bone, cardiovascular, neuromuscular, and immune health.* Adequate calcium and vitamin D throughout life, as part of a well-balanced diet, may reduce the risk of osteoporosis.* Supplementation with vitamin D may be necessary to meet daily needs, since obtaining sufficient vitamin D from natural food sources and sun exposure alone can be difficult. Research shows that vitamin D3 (cholecalciferol) is approximately 87% more potent than vitamin D2 for raising and maintaining vitamin D blood levels.* *The views, opinions, statements and claims expressed in articles, studies, surveys and/or publications in connection with various products offered for sale by Bio-Tech Pharmacal, Inc. contained in this website are those only of the author(s) of such views, opinions, statements and/or claims, none of which Bio-Tech Pharmacal has endorsed or adopted and none of which have been evaluated by the U.S. Food and Drug Administration. Bio-Tech Pharmacal, Inc.'s products are not intended for use in the diagnosis, cure, mitigation, treatment, or prevention of any disease."