Recommended Daily Allowance

Currently, there are no DRIs for carotene intake, as it is believed that the current state of research on these nutrients is not strong and consistent enough to support any recommendations. An intake of -carotene 6 mg is needed to meet the vitamin A RDA of 1,000 mcg retinol equivalents (RE) [44]; RE is a measurement of vitamin A intake that allows for comparison of different forms of the vitamin. One IU of vitamin A is equivalent to -carotene 0.6 mcg [60]. Due to insufficient data demonstrating a threshold above which adverse events will occur, no UL has been set for any carotenoid [6].