Natures Aid Natural Beta Carotene is derived from the alga Dunaliella which is the richest vegetable source of Beta Carotene. Beta Carotene is converted naturally & safely into Vitamin A according to the body s needs. Beta Carotene is also beneficial in supporting the immune system against free radicals chemicals involved in damaging cells. Benefits Due to the fact that Beta Carotene is converted into vitamin A many of its functions are those of Vitamin A bull Promotes growth strong bones