The Complete Guide to Herbal Medicines Author:Charles W., Ph.D. Fetrow, Juan R. Avila ...an authoritative home reference providing essential and dependable facts on over 300 commonly used herbal medicines ...each entry includes the herb's benefits, recommended dosages, interactions, and side effects.
This is a fairly detailed book with an easy to use format. One thing I like about it is that it contains a glossary of medical terms and a section on drug/herb interaction.