VITAMIN A 10,000 I.U. 100 SOFTGELS BY DOUGLAS LABORATORIES

Vitamin A 10,000 i.u.   DESCRIPTION Vitamin A, provided by Douglas Laboratories, contains 10,000 I.U. per softgel of Vitamin A palmitate in fish liver oil.   FUNCTIONS Vitamin A (retinol) is a fat-soluble vitamin essential for vision, growth, reproduction, cell division, and the integrity of the immune system.   The most well-known function of vitamin A is its role in vision. As part of the membrane-bound visual protein rhodopsin, vitamin A is essential in the eyes for converting light into nerve impulses. Night blindness and xeropthalmia are signs of moderate to severe vitamin A deficiency. Xerophthalmia is a common cause of preventable blindness in many underdeveloped countries around the world.   Vitamin A is essential for normal cellular differentiation. Its metabolite, retinoic acid, assumes a central role in gene activation and transcription. As a result, vitamin A status has profound effects on all rapidly dividing tissues in the body, such as immune cells and intestinal cells,