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Our Vitamin D-3 provides 25 mcg (1,000 IU) of cholecalciferol per tablet. Cholecalciferol, otherwise known as D3, is the vitamin D that is formed when the sun touches human skin.
For additional formula information, view the Supplement Facts panel.
All Windmill supplements are manufactured in the United States in an FDA-inspected facility whose cGMP (current Good Manufacturing Practice) are independently verified by qualified certification organizations.
Free of artificial colors, flavors, and preservatives, Windmill is a trusted name that has been providing America with quality supplements for over 45 years.