Natures Answer Vitamin D3 Drops. Since 1972 In Extra Virgin Olive Oil Dietary Supplement 4000 IU Per Serving Vital to Health & Well-Being 300 Servings Kosher Parve Vitamin D is called the \"\"Sunshine Vitamin\"\" because it is produced naturally by the body after exposure to 20 min - 1/2 hour of sunlight. Many people develop deficiencies due to lack of sun exposure, living in cold climates, and other reasons. Research continues to accumulate showing that vitamin D deficiency is widespread, and that this deficiency is linked to a wide range of illnesses. Vitamin D is most well-known for its contribution to joint and bone health by helping the body absorb calcium. However, new research is showing that Vitamin D also plays a major role in immune function, and other metabolic processes important for the maintenance of health and well being. It is especially important to maintain adequate Vitamin D levels in children, as we age, and when we are under stress. Vitamin D-3 is vital for many functions in our bodies, including the promotion of strong bones by assisting calcium metabolism. Vitamin D also influences a host of key biological functions vital to health and well-being. Ingredients:Serving Size: 2 drops Servings Per Container: 300 Amount Per Serving % Daily Value* Calories from Fat 10 Total Fat Vitamin D3 (as cholecalciferol)** 4000 IU 1000% * Percent Daily Values are based on a 2,000 calorie diet **Sourced from Lanolin. Other Ingredients: Extra virgin olive oil Salt-free, wheat-free, corn-free, yeast-free, sugar-free, milk-free, preservative-free, fish-free. Warnings:Keep out of reach of children.