Here is a report talking about new FDA warning letters to Vitamin Companies with violations of FDA codes. Mainly these are directed toward fitness and diet products. But there are also links to articles with studies showing some negative vitamin results. Some vitamins not to take with label terms to avoid plus the only two vitamins research shows positive effects for longer life. Folic Acid and Omega-3. article
An evaluation will be coming soon, but the same info in many of the articles on this website reveal truths the FDA is still ignoring.