Doc. sally, Mrs.D, all who responded to this issue. The amount of research and information you give are a blessing to this site. I am so grateful for the time all of you take to investigate these matters, and present them to this forum. From my own view point, the drug companies are corrupt. I rode the RX Express to Canada about 5 years ago, to protest our Government not dealing with the manufactures of the drugs. I think this corruption spreads right down to the vitamines as there is money to make. That is just my opinion, as I saw how Canada does it. ginnie