be sold in the US because the Recommended Daily Allowance for
vitamin C is a mere 60 milligrams per day. Taken at that level, the
toxic metals would, as the FDA sees it, do no harm. However, many
users of vitamin C take 100--200 times the RDA. The cheap form of C
would expose them to potentially toxic levels of heavy metal
poisons. The highly refined top-quality product removes impurities
to a virtually undetectable level.

I buy my C from Bronson who ethically gives me the quality stuff. I
know for a fact that the vitamin C sold by Prolongevity is also top
quality. I've had clients who bought cheaper C than Bronson's and
discovered it was not quite like Bronson's in appearance or taste.
More importantly, it did not seem to have the same therapeutic
effect.

The distributors I've mentioned so far, Bronson, NOW, Cooper,
Prolongevity and Vitamin Research Products are all knowledgeable
about differences between actual manufacturers and are ethical,
buying and reselling only high quality products. Other distributors
I believe to be reputable include Twin Labs, Schiff and Plus. I know
there are many other distributors with high ethic levels but I can
not evaluate all their product lines. And as I've mentioned earlier,
businesses come and go rather quickly, but I hope my book will be
read for decades. I do know that I would be very reluctant to buy my
vitamins at a discount department store or supermarket; when
experimenting with new suppliers I have at times been severely
disappointed.

Co-enzyme Q-10. This substance is normally manufactured in the human
body and is also found in minuscule amounts in almost every cell on