Liquid Vitamin D 1000 IU Per Drop Dietary Supplement 365 Drops Gluten-Free Preservative-Free Soy-Free An FDA. Regulated Facility This Amazing Vitamin Supports and Promotes: Teeth & Bone Health Healthy Immune System Function A Healthy Cardiovascular System Muscle Health Calcium Absorption The Sunshine Vitamin Vitamin D3 plays an important role in overall health, but not everyone gets enough from the sun. Carlson Super Daily D3 provides the natural form of Vitamin D3 in a safe, quick, and convenient way. Just a single drop of Carlson Super Daily D3 supplies 1,000 IU of concentrated liquid vitamin D3.