Dietary Supplement 400 IU Per Drop Made with Organic Olive Oil 500 Drops Per Bottle Purity & Potency Guaranteed Certified Organic by QAI Non-GMO - Mass Spec - Documentation - Lab Tested Big Friends Liquid Vitamin D3 is carefully blended in a mixture of organic extra-virgin olive and flaxseed oils providing 400 IU of vitamin D3 in just one little drop. Vitamin D3 is essential for strong bones and teeth as it increases the body’s absorption of calcium from food. Its role in regulating calcium levels also helps regulate the immune system and maintain healthy nerves and muscles.