RT Book, Section A1 Quan, Dan A1 Lovecchio, Frank A2 Tintinalli, Judith E. A2 Stapczynski, J. Stephan A2 Ma, O. John A2 Yealy, Donald M. A2 Meckler, Garth D. A2 Cline, David M. SR Print(0) ID 1121513247 T1 Anticholinergics T2 Tintinalli’s Emergency Medicine: A Comprehensive Study Guide, 8e YR 2016 FD 2016 PB McGraw-Hill Education PP New York, NY SN 9780071794763 LK accessmedicine.mhmedical.com/content.aspx?aid=1121513247 RD 2024/04/23 AB Approximately 620 compounds have anticholinergic properties, including prescription drugs, over-the-counter medications, and plants (Table 202-1). Many of these substances possess anticholinergic activity as either a direct therapeutic effect or an adverse effect, in addition to their primary or predominant pharmacologic effect. Atropine (d,l-hyoscyamine), hyoscyamine, and scopolamine (l-hyoscine) are natural alkaloids that represent prototypical anticholinergic compounds.