VitaHealth Vitamin D3 1000IU is a high-strength vitamin D for the maintenance of bone health. Vitamin D is essential for facilitating the intestinal absorption of calcium and phosphorus, as well as supporting immune health. Aside from that, it has been linked to supporting cardiovascular health, blood sugar level normalization and mood maintenance. Vitamin D3 is the naturally-occurring form of Vitamin D, thus, it is more biologically active and delivers better health efficacy. Deficiency of vitamin D affects almost 50% of the population worldwide and results in osteoporosis, rickets, fractures, falls, muscle weakness, increased risks of getting infections, etc. It is formulated in a base of rice bran oil for better absorption.