Improves vision Boosts the immune system Maintains bone structure Helps maintain the lining of organs and tissues Regulates cell growth and division Natural Factors Vitamin A is sourced from cod liver oil, produced using molecular distillation to ensure there is no chemical or heavy metal contamination. Vitamin A helps maintain eyesight, skin, mucous membrane health, and immune function. It is also beneficial in the development and maintenance of night vision, bones, and teeth.