D Drops Liquid Vitamin D3 - 1000 IU - 0.34 fl ozD Drops Liquid Vitamin D3 Description: Family Size The Sunshine Vitamin in Just One Drop A Factor in the Maintenance of Good Health 1000 IU per Drop 365 Drops Vitamin D is made in the skin when exposed to summer sunshine (UVB) and is present in only a few foods. Vitamin D is necessary for healthy bones and for muscle function. Vitamin D can be measured with a blood test for 25 Hydroxyvitamin D. The institute of Medicine recommends this level should be