Relationship between the pharmacodynamics and pharmacokinetics of two oral sustained-release formulations of isosorbide dinitrate in normal man.
The relationship between the pharmacodynamics and pharmacokinetics of isosorbide dinitrate (ISDN) following oral administration of 40 mg of two different models. A model assuming an additive contribution of all active drug-related substances in plasma to pharmacological effect, i.e., finger pulse plethysmograph, resulted in estimates of relative potencies of ISDN:2-MN:5-MN (2-MN:2-isosorbide mononitrate; 5-MN:5-isosorbide mononitrate) as being 1:0.1:0.025. The data analysis using a receptor model (plasma concentration-effect curves) yielded sigmoid curves yielded sigmoid curves for 2-MN and 5-MN with similar relative potencies in the range of 20-80% of maximum response providing an upper limit for the pharmacodynamic effect due to ISDN, 2-MN or 5-MN in healthy volunteers.
D003692:Delayed-Action Preparations; D006801:Humans; D007548:Isosorbide Dinitrate / Q000008:administration & dosage / Q000378:metabolism / Q000494:pharmacology*; D007700:Kinetics; D008297:Male; D011674:Pulse / Q000187:drug effects
D003692:Delayed-Action Preparations; D007548:Isosorbide Dinitrate