The Beta Carotene form of vitamin A is harmless during pregnancy I think because your body has a way of moderating its transformation of Beta Carotene to Retinol. If you eat too much Beta Carotene, it just gets stored harmlessly in your body and you might look kind of orange. Beta Carotene is the fruit and vegetable kind of vitamin A. Retinol is what's found in animal protein. This is what is harmful in large amounts. Liver is said to have the highest amount of this and so pregnant women are advised to stear (sp?) clear of liver.