http://www.albalagh.net/halal/col1.shtml Beta Carotene Itself Is Halaal Ingredient Because It Is Obtained From Plant Source And Is An Inactive Form of Vitamin A. But It Has To Mix With A Carrier Such As Vegetable Oil And Gelatin To Dissolve Or Disperse In A Food System. The Carrier Added To Beta Carotene Is Considered As A Processing Aid Ingredient And It Is Sometimes Not Mentioned In The Ingredient List. If It Is Mixed With Vegetable Oil, It Is Halaal. But If It Is Mixed With Pork Gelatin, Then It Becomes Haraam.
Wallaahu A'lam