Healthy Origins Natural Beta-Carotene 25,000 IU is manufactured using a premium form of beta-carotene sourced from Blakeslea trispora fungi. Beta-carotene is a precursor to Vitamin A (retinol) production in the body. When it is taken as a supplement, beta-carotene is a safer alternative to Vitamin A since the body only converts as much Vitamin A from beta-carotene as it requires.*