dietary supplements

Rates the effectiveness and safety of more than 300 natural substances. Each alphabetically arranged listing includes information about the substance's common forms, medical benefits, side effects, and dangers.

Presents alphabetized profiles of supplements, arranged in several categories--vitamins, minerals, water, amino acids, antioxidants, enzymes, natural food supplements, and herbs--providing their actions, sources, and cautions, and discussing related topics.

Studies the effectiveness and safety of taking St. John's Wort for depression, kava for stress or anxiety, ginkgo for memory loss, or valerian for insomnia.

Provides athletes with information about the side effects and dangers of using drugs and supplements to increase performance.

Presents descriptions of over 250 nutritional supplements, herbs, vitamins, and other natural medicines, each with information on what the product is for, how it works, its safety and effectiveness, side effects, drug and food interactions, dosage, and cautions. Arranged alphabetically, with recommendations on the treatment of seventy common conditions.