Written and peer reviewed by experts in practice and academia, the 20th edition of the Handbook of Nonprescription Drugs: An Interactive Approach to Self-Care is an authoritative resource for students and for health care providers who counsel and care for patients undertaking self-treatment-nonprescription drugs, nutritional supplements, medical foods, nondrug and preventive measures, and complementary therapies. Its goal is to develop the knowledge and problem-solving skills needed to assess a patient's health status and current practice of self-treatment, to determine whether self-care is necessary or appropriate, and, if appropriate, to recommend safe and effective self-care measures. KEY FEATURES: Enhanced content in all chapters from the previous edition with up-to-date information beneficial to all health care providers and students. Updates to the universal objectives to complement the content in the chapters focused on medical disorders. Abstracts for each online chapter providing concise introductory material focused on key features of each chapter. Up-to-date content on nonprescription medications including indications, dosages, interactions, current evidence, medical conditions and prescription to nonprescription reclassifications. Quick-reference tools such as treatment algorithms (including exclusions for self-treatment), drug product tables, patient education sidebars, and product administration illustrations.