RT Book, Section A1 Katzung, Bertram G. A1 Kruidering-Hall, Marieke A1 Trevor, Anthony J. SR Print(0) ID 1156527821 T1 Adrenoceptor Blockers T2 Katzung & Trevor's Pharmacology: Examination & Board Review, 12e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9781259641022 LK accessmedicine.mhmedical.com/content.aspx?aid=1156527821 RD 2024/03/28 AB Alpha- and beta-adrenoceptor-blocking agents are divided into primary subgroups on the basis of their receptor selectivity. All of these agents are pharmacologic antagonists or partial agonists and most are reversible and competitive in action. Because α and β blockers differ markedly in their effects and clinical applications, these drugs are considered separately in the following discussion.