Promotes optimum calcium absorption - delivers 5,000 IU of vitamin D3 in its most active and beneficial form: Cholecalciferol. Vitamin D3 is the single most important vitamin to supplement. Combines Vitamin D with Calcium and Magnesium to promote optimum Calcium absorption and support bone health. Calcium cannot be absorbed without adequate Vitamin D, which makes Vitamin D just as important as Calcium for bone health. | Superior pure bio-active ingredients - Provides the most active and beneficial form of vitamin d3, calcium and magnesium. also: Vitamin C. Contains no Milk / Dairy-Free, Gluten-Free; no soy, yeast, wheat, sodium, salt, sugar, fat, cholesterol, color, preservative, common allergens or manufacturing additives. | Unsurpassed purity, quality & efficacy. Won't upset your stomach! - For 40+ years ProCaps products have contained no additives of any kind. No binders, fillers, lubricants, stabilizers, flowing agents, preservatives or artificial colors. Easy-to-swallow capsules (no tablets) deliver only the most bioactive vitamins, minerals & ingredients in an ultra-fine micro-granulated powder for fast, complete absorption & maximum effectiveness. Non-acidic formula is gentle even on most sensitive stomachs. | Manufacturer direct and made in Henderson, Nevada - Ethical and eco-friendly, ProCaps formulates, manufactures, and controls every aspect of its products: from formulation, ingredient sourcing, production and quality control. ProCaps' facilities are 100% Solar Powered with a Zero Carbon Footprint. All ProCaps bottles are made from 100% recyclable post-consumer resin. Plus, Andrew Lessman and ProCaps are the largest donor of prenatal vitamins in the world (over 2 billion capsules donated to date). | Ethical & Eco-friendly. Zero Carbon Footprint - Uniquely committed to your health and the health of the planet, ProCaps' facilities are 100% Solar Powered with a Zero Carbon Footprint and an LEED Gold green building status. All ProCaps bottles are made from 100% recyclable post-consumer resin. Plus, Andrew Lessman and ProCaps are the largest donor of prenatal vitamins in the world (over 2 billion capsules donated to date). ProCaps, the Informed Choice for Nutritional Supplements.