Hi R.---Isolated vitamins really don't do much good for the body, unless you are deficient, and then should only be taken as long as needed to reestablish proper levels in the body. This should only be done after testing and under the care of a professional who knows nutrition. If we take isolated vitamins on a regular basis, they actually can cause free radical damage in the body, the very thing we think popping these pills will eliminate. The only thing that works safely and effectively is FOOD. Having said that, I am of the opinion, as are many knowledgable health care professionals, that we do need help. There is a whole food based supplement, made of fruit and veggie juice powders, backed by 18 independent third party studies. This research shows that this particular food supplement is treated as food in the body. Positive changes are seen in the immune system, as well as the cardiovascular system and repair and protection of DNA are also documented.
If you would like information about what my family uses for nutrition insurance, I'd be honored to help you. I have articles about isolated vitamins that may also help you in your decision making. Whatever you do, with whatever product you look at, CONTACT THE COMPANY THAT MAKES IT AND ASK FOR THEIR PEER-REVIEWED THIRD PARTY RESEARCH DONE ON THAT PRODUCT IN THE HUMAN BODY. After all, we want it to help, not harm us, right? Good luck! D.