This book's first edition (1997) was the first of its kind in addressing herbal interactions with drugs. This 4th edition keeps current with research findings and scrupulously distinguishes between what is known through (1) empirical clinical observations such as case reports, (2) data obtained from modern clinical human studies, (3) different types of laboratory research on animals and with tissues and cells. Over 2700 medical and scientific sources are cited to document these findings. In addition, the type of preparation studied is described to emphasize differences between preparations...