The quick reference guide you need to avoid harmful interactions between prescription drugs, over-the-counter medications, and dietary supplements Drug Actions and Interactions is a handy easy-to-access guide to understanding what major drugs are available for specific diseases, how selected drugs produce therapeutic benefits, side effects that may occur when taking these drugs, and which drugs and supplements should not be taken in combination with each other. Applying the 300 most often prescribed drugs in the United States to more than 80 common disorders, Drug Actions and Interactions discusses each drug's mechanism of action, side effects, and drug interactions. Molecular structures of medications are also included to help you understand their mechanisms of action. Coverage includes drugs that act on the major systems (cardiovascular, respiratory, gastrointestinal, genitourinary, endocrine, neuronal); bone, muscle, skin, and joints; and general health. You will also find an appendix listing major drugs currently in use in each therapeutic classification. Thirty-two additional appendices detail interaction between a therapeutic group of drugs and an individual drug or group of drugs, such as interactions of beta-blockers, alpha-blockers, calcium-blockers, etc.