title: Principles of transdermal nitroglycerin administration.
abstract: The currently marketed delivery systems for transdermal nitroglycerin (GTN) develop fairly constant GTN plasma concentrations throughout the 24-h application period. This may be associated with tolerance, particularly when higher doses are employed. Because of this problem, a new GTN transdermal delivery system (TDS) has been developed which provides a time-dependent, non-constant drug delivery rate. This system was engineered to provide high GTN plasma concentrations during the first 12h of application which should prevent exercise-induced angina and low nitroglycerin levels during the second 12-h period to prevent tolerance. This GTN TDS with a phasic release profile is described and the in vitro and in vivo release rates and resulting plasma concentrations are contrasted with those of conventional GTN transdermal patches.
authors.affiliation: Schwarz Pharma, Monheim, Germany.
authors.forename: H M
authors.initials: HM
authors.lastname: Wolff
authors.forename: R
authors.initials: R
authors.lastname: Bonn
mesh_terms: D000279:Administration, Cutaneous; D000787:Angina Pectoris / Q000188:drug therapy; D004334:Drug Administration Schedule; D006801:Humans; D005996:Nitroglycerin / Q000008:administration & dosage* / Q000627:therapeutic use
chemical_list: D005996:Nitroglycerin