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A drug class is a group of related medications that have similar chemical structures, the same mechanism of action (i.e., bind to the same biological target), a related mode of action, and/or are used to treat the same disease. These four types of classifications form a hierarchy. For example, the fibrates are a chemical class of drugs (amphipathic carboxylic acids) that share the same mechanism of action (PPAR agonist), mode of action (reducing blood triglycerides), and are used to prevent and to treat the same disease (atherosclerosis). Conversely not all PPAR agonists are fibrates, not all triglyceride lowering agents are PPAR agonists, and not all drugs that are used to treat atherosclerosis are triglyceride lowering agents. The most widely used drug classification is the Anatomical Therapeutic Chemical Classification System (ATC). The Systematized Nomenclature of Medicine (SNOMED) also includes a section devoted to drug classification. == Chemical class == Examples of drug classes that are based on chemical structures include: * β-lactam antibiotic * Benzodiazepine * Cardiac glycoside * Fibrate * Thiazide diuretic 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Drug class」の詳細全文を読む スポンサード リンク
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