The worst case is that you may feel better, thus, healthier. Please review and determine if they make sense to you. A glass or two is good. It does much the same thing as the CRAN, and also needs roughage to complete the task. However, grapefruit juice is a little strong for some.
Nutritionists agree that beta-carotene does help the body.
However, here are a couple things to note. I also use Sundown Label of almost everything. Another vitamin that has helped, is E . I take 200 I.U.s in the morning, and another 200 at lunch, rather than one 400 I.U.s once a day. Vitamin E enhances various body functions, so it can't hurt to take it regularly.