The Interaction of Hydrochlorothiazide with Spirapril: A Novel Ace Inhibitor |
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Authors: | Johnson Brian F. Johnson Johanna Surve Ali Smith Harold |
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Affiliation: | University of Massachusetts Medical Center, Worcester, USA, and Sandoz Research Institute. |
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Abstract: | In an open-label, randomized trial using a 3 x 3 Latin square design, single doses of 24 mg of the ACE inhibitor spirapril, or 50 mg hydrochlorothiazide, or their combination were given to 18 healthy male volunteers. No alteration in the area under plasma drug concentration curve (AUC), peak plasma level, time to peak level, or elimination half-life was detected for hydrochlorothiazide, spirapril, or its active metabolite, spiraprilat, during combination therapy. It was concluded that there was no significant effect of spirapril on single-dose kinetics of hydrochlorothiazide, nor of hydrochlorothiazide on single-dose kinetics of spirapril. Significant reductions in systolic blood pressure were noted 2--6 h after either spirapril or combination treatment, but no evidence of any synergistic effect of single-dose effects on blood pressure was seen during combination therapy. |
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