Here is what Dr. Gallant has to say to my questions:
Remember, you get what you pay for no matter what product you purchase today so if you find a supplement for 10 or 20 dollars you are probably not getting the best. Cheap supplement suppliers often have to cut corners by using cheaper materials allowing them to cheaply manufacture products.
He then went on to explain how natural supplements were indeed superior because of how they were absorbed and excreted and also how to choose between the various forms of minerals.
And what about "dosing". Are mega doses better? And what about the form the vitamins are in?
For those of you that are interested in figuring out optimal dosing of vitamins and minerals I recommend books by Dr Michael Murray ND (Encyclopedia of Nutritional Supplements), Dr Michael Colgan PhD and Phyllis Balch (Guide to Nutritional Healing).
Dr Gallant also recommended one brand of multivitamins over the others. This choice was a surprise to me, but he said that he spent time researching many of the brands out there and was looking for one which had the best quality ingredients with the best dosing and the best mix of phytonutrients. He also wanted one which was available to everyone, no matter where you live.
Dr Gallant's final choice was Usana Essentials , which can be ordered online and has an international portal on their website.
He has written more about this subject on his website ( Here is the link )
Here are the books he recommends for those who wish to explore this subject more: