Summary
The influence of beta-blocker coadministration on the kinetics of oral isosorbide-5-mononitrate (ISMN) and isosorbide dinitrate (ISDN) was studied in healthy volunteers. In the first study, 12 subjects ingested 20 mg ISMN on three occasions in the control state, during coadministration of metipranolol (20 mg 3 times daily), or during metoprolol (100 mg twice daily). There were no significant differences among the three phases in peak serum ISMN concentration (470 ng/ml), the time of peak (0.6 h after dose), elimination half-life (4.5 h), or oral clearance (142 ml/min). In the second study, 10 subjects received 20 mg ISDN in the control state and again during coadministration of propranolol (80 mg 3 times daily). There were no differences between the two phases in peak serum ISDN concentration (20 ng/ml) or the time of peak (0.6 h). Propranolol increased, although not significantly, ISDN clearance (16.5 vs 12.3 L/min,P<0.1), and had no effect on total area under the curve for ISMN, the major metabolite of ISDN. Thus, therapeutic doses of these beta-blockers have a minimal influence on the kinetics of single doses of ISMN or ISDN in healthy individuals.
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Abbreviations
- AUC:
-
Area under curve
- ISDN:
-
Isosorbide dinitrate
- ISMN:
-
Isosorbide-5-mononitrate
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Supported in part by grant OC 10/6-4 from the Deutsche Forschungsgemeinschaft, and a grant from Boehringer Mannheim, Federal Republic of Germany
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Ochs, H.R., Neugebauer, G., Greenblatt, D.J. et al. Influence of beta-blocker coadministration on the kinetics of isosorbide mononitrate and dinitrate. Klin Wochenschr 64, 1213–1216 (1986). https://doi.org/10.1007/BF01734458
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DOI: https://doi.org/10.1007/BF01734458