Abstract
The plasma concentration of isosorbide dinitrate (ISDN) was monitored up to 24 h after a chronic oral dose of 60 mg in six patients with coronary artery disease. A terminal half‐life of 7.7 +/‐ 2.6 h (mean +/‐ s.d.) was observed. The presence of this prolonged disappearance phase provided at least a partial explanation for the observed accumulation of ISDN in plasma after chronic dosing on a six hourly regimen.