The round table Ion channel pharmacology, organized by the Esteve Foundation and held on May 31, 1994, was moderated by A.G. García, from the Department of Pharmacology and Therapeutics of the Faculty of Medicine of the Autonomous University of Madrid. A total of eleven submissions, like nicotinic acetylcholine channels, oxygen-regulated potassium channels, or second-messenger-sensitive calcium channels, are gathered in Dr. Antonio Esteve’s Monograph number 17.