Your skin produces vitamin D when in direct sunlight or indoor tanning devices, but thats not an ideal solution for obvious reasons. Choose a potent vitamin D3 supplement from Life Extension instead.Dietary ConsiderationsGluten FreeNon-GMOServing Size:1 DropServings Per Container:850 Amount Per Serving% Daily ValueVitamin D3 (as Cholecalciferol)50 mcg250%Other Ingredients:medium chain triglycerides oilTake one (1) drop once or twice daily with food, or as recommended by a healthcare practitioner.Individuals consuming more than 50 mcg (2,000) IU/day of vitamin D (from diet and supplements) should periodically obtain a serum 25-hydroxy vitamin D measurement. Do not exceed 10,000 IU per day unless recommended by your doctor. Vitamin D supplementation is not recommended for individuals with high blood calcium levels.Keep out of reach of children. Do not exceed recommended dose.Do not purchase if outer seal is broken or damaged. Store tightly closed in a cool, dry place. The number of drops may vary based on temperature and altitude.When using nutritional supplements, please consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.Contains tree nuts (coconut).