My wife takes a product called OCCUVITE PRESERVISION made by Bocsh & Laumb. It is a vitamin supplement that has Lutien and Vitamin A made from Beta-Carotene. It is supposed to prevent macular degeneration. The doctor was very strict when he said that anyone who smokes now or who has been a smoker in the past should NOT take this product because it will definitely cause cancer. My wife has never smoked so she has nothing to worry about. She has been on it for 7 years now and has had no adverse effects.