Faulding® Remedies Vitamin D 1000IU (Aust L 196141) aids in the absorption of calcium which supports the development and maintenance of strong, healthy bones. Vitamin D is mainly produced in our skin by a reaction that requires sunlight. People who limit their exposure to sunlight may have an increased need for vitamin D supplementation. Faulding® Remedies Vitamin D 1000IU may also assists with calcium absorption.