Possible Death from Cough SuppressantAschenbrenner, Diane S. MS, RNAJN The American Journal of Nursing: April 2011 - Volume 111 - Issue 4 - p 68 doi: 10.1097/01.NAJ.0000396561.17243.37 Drug Watch Abstract Author Information Ingestion of even small amounts of the cough suppressant benzonatate (Tessalon) by children under age 10 can result in overdosage. Symptoms of an overdose include central nervous system (CNS) stimulation (restlessness, tremors, or seizure), followed by profound CNS depression (coma), as well as hypotension, cardiac arrhythmias, and cardiac arrest. Diane S. Aschenbrenner is the course coordinator for undergraduate pharmacology at Johns Hopkins University School of Nursing in Baltimore, MD. She also coordinates Drug Watch: email@example.com. © 2011 Lippincott Williams & Wilkins, Inc.