10,000 IU/day (plant-derived) for adult males.
8,000 for adult females - 12,000 if lactating.
4,000 for children ages 1-3
5,000 for children ages 4-6
7,000 for children ages 7-10
Vitamin A helps cell reproduction. It also stimulates immunity and is needed for formation of some hormones. Vitamin A helps vision and promotes bone growth, tooth development, and helps maintain healthy skin, hair, and mucous membranes. It has been shown to be an effective preventive against measles.
Deficiency can cause night blindness, dry skin, poor bone growth, and weak tooth enamel.
Alpha-carotene, beta-carotene and retinol are all versions of Vitamin A.