The Beginner's Vitamin Encyclopedia Author:Richard A. Passwater, Ph.D Don't be confused about all these vitamins. Among so many different kinds of supplements, it is difficult to choose which kind, how often and how much to take or where to store for how long when considering your vitamin needs. Richard Passwater sorts out misleading information from the tried and true and answers such baffling questions as how to... more » estimate what is required for health insurance, protection from a specific health hazard or for therapy for an existing ailment. His description of each vitamin takes the confusion out of names and labels, and the simple, complete tables make it much easier to understand and determine the optimal level of supplementation for your greatest health.« less