Vitamin D3 helps to shuttle other nutrients like calcium and phosphorus through the intestinal walls and into the bloodstream where they may help support bone density and bone strength. This ultra-premium plant based vitamin D3 is made from a unique trademarked ingredient called Vitashine. Vitashineis a nutrient dense from of algae called lichen. Organic D3 from lichen is a quality source of vitamin D that is highly absorbable in your body. This allows for maximum health benefits while taking a smaller dose than you might with a synthetic forms of vitamin D. They only use vegetarian d3 that is organic, vegan certified, non-GMO verified, carrageenan free, dairy free, gluten free, soy free and contains no artificial ingredients or chemicals. All products are produced under cGMPs (current Good Manufacturing Practices). All ingredients and finished goods are subjected to rigorous 3RD party analytical testing.