Easy-to-use charts show how to use vitamins, herbs, minerals, and supplements correctly and safely.

H. Winter Griffith, M.D., received his medical degree from Emory University in 1953 and spent more than 20 years in private practice. At Florida State University, he estabilshed a basic medical science program and also directed the family practice residency program at Tallahassee Memorial Hospital. After moving to the Southwest, he became associate professor of Family and Community Medicine at the University of Arizona College of Medicine. He devoted most of his time to writing medical-information books for general readers.