Our Natural Vitamin A provides you with 10,000 IU from pure fish liver oil in each softgel. Vitamin A supports a healthy immune system and is essential for healthy eye function.? For additional formula information, view the Supplement Facts panel. All Windmill supplements are manufactured in the United States in an FDA-inspected facility whose GMPs (Good Manufacturing Practices) 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 40 years.