Thorne Vitamin D 10,000 supports bones, muscles, cardiovascular health, and immune function. D-10,000 is intended for individuals who need higher vitamin D supplementation. Sunlight provides natural vitamin D but many individuals of all ages, especially the elderly no not get enough vitamin D. Vitamin supplementation is very important to maintain healthy vitamin D levels for health throught the body. Thorne's vitamin D is formulated for those who are lactose intolerant and sensitive to preservatives such as BHT, BHA, sodium benzoate, and sorbic acid. Recommended use: Take 1 capsule daily or as recommended by a healthcare professional. Thorne Vitamin D 10,000 facts: 1 capsule contains: Vitamin D (as Vitamin D3) (10,000 IU) 250 mcg Other Ingredients: Microcrystalline Cellulose, Hypromellose (derived from cellulose) capsule, Leucine, Silicon Dioxide, Vitamin E (d-Alpha Tocopheryl).