[Pharmacokinetics of 14C-isosorbide dinitrate after administration in various sustained-release formulations]

Autor: L F, Chasseaud, T, Taylor, R M, Major, I W, Taylor, V, Luckow, A, Darragh, R F, Lambe
Jazyk: němčina
Rok vydání: 1983
Předmět:
Zdroj: Arzneimittel-Forschung. 33(9)
ISSN: 0004-4172
Popis: To study the influence of various in vitro release rates and of coadministration with food on bioavailability of isosorbide dinitrate (ISDN; isoket retard 40) and its mononitrate metabolites from sustained-release formulations the pharmacokinetics of two experimental batches of tablets with different release rates containing 40 mg 14C-ISDN each were studied in six human volunteers. One of the formulations was not only administered after fasting but aslo with a standard meal. In all cases approx. 80% of the administered radioactivity were recovered in the urine and 5% in the faeces during 3 days demonstrating extensive absorption. Any influence of release rates or food on absorption rates could not be detected. When administered after fasting either formulation was bioequivalent. Coadministration of a meal enhanced ISDN plasma levels in some subjects although no statistically significant difference in extent of bioavailability was observed. Availability of the mononitrates was unaffected by food.
Databáze: OpenAIRE