RT Book, Section A1 Lo, Jean C.Y. A2 Cline, David M. A2 Ma, O. John A2 Cydulka, Rita K. A2 Meckler, Garth D. A2 Handel, Daniel A. A2 Thomas, Stephen H. SR Print(0) ID 56276406 T1 Chapter 107. Xanthines and Nicotine T2 Tintinalli's Emergency Medicine Manual, 7e YR 2012 FD 2012 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-178184-8 LK accessemergencymedicine.mhmedical.com/content.aspx?aid=56276406 RD 2024/03/29 AB Theophylline, theobromine, and caffeine are methylxanthines. Theophylline was once widely used for the management of asthma and chronic obstructive pulmonary disease. Theobromine is found in chocolate and cocoa as well as numerous “energy drinks.” Caffeine is the most commonly used psychoactive drug in the world and can be legally purchased by children. It is used medically in the management of apnea of prematurity, as an analgesic adjunct, and in some over-the-counter weight loss preparations.