Dietary Supplement. Strengthens Your Bones & Supports Heart Health* Sunshine in a Bottle Vitamin D helps regulate calcium levels throughout the body to help build and maintain strong bones and teeth.* Research also suggests Vitamin D may help support heart health and immune function.* Vitamin D is produced in the body naturally with the help of sunshine, but most of us do not get the daily requirement. A supplement can help.*. What s the Jamieson Difference? What s Vitamin D Droplets are made using only Quali™-D, the world s purest Vitamin D3. A marriage of natural materials and state-of-the-art science, Quali™-D is the same form of the vitamin D that the body produces naturally when skin is exposed to sunli.