[Bioavailability and bioequivalence of organic nitrates. Isosorbide dinitrate--a study of sustained-release preparations].

Assessment of Bioavailability of Organic Nitrates/Comparative bioavailability study of sustained-release isosorbide dinitrate preparations. Relative bioavailabilities of isosorbide dinitrate (ISDN, CAS 87-33-2) and the metabolite isosorbide-6-mononitrate(IS-5-MN, CAS 16051-77-7) were studied after application of Maycor ® retard 40 (sustained-release capsules, multiple unit formulation, test preparation) in comparison to sustained-release tablets (single unit formulation, reference preparation) with 16 healthy male volunteers in a two-way crossover design. Test and reference formulations were previously characterised in vitro by dissolution tests