If you're either taking, or thinking of taking, vitamins or herbs along with your prescription and nonprescription medications, then you need this book! Millions of people, just like you, use both without knowing that some combinations are beneficial while some can be downright dangerous. Based on the revolutionary electronic internet database Healthnotes Online, this book is written by the most trusted and respected experts in natural medicine--medical doctors, naturopathic physicians, and pharmacists--who have created the only natural health information resource that is both comprehensive and user-friendly. The A-Z Guide helps you learn which drugs can deplete your body's essential nutrients; which supplements can help your prescrptions work better, or reduce drug side effects; and which herbs and drugs should never be taken together.