Update to the best selling WHAT'S BEST IN MULTIVITAMINS. Learn all about mega-doses, tolerable upper limits and levels of nutrients for optimal health. The only book of its kind.

Organized medicine now recommends a multivitamin for every American, but which one? This book helps you select the best brands. Even lets you rate your own favorite multivitamin.

First there was the RDA—the Recommended Daily Allowance. Now there is the RGS—Recommended for Genome Stability. Read inside about the levels of vitamins required to protect your DNA.

Can you overdose on vitamin A, or vitamin D, or take too much vitamin C, or even calcium?

Multivitamins should be balanced, potent, complete and provided in the proper form. Most brands aren't. Find out why inside.