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Clin Pharmacol Ther. 1977 May;21(5):602-9.

Spironolactone and canrenoate-K: relative potency at steady state.

Abstract

Relative dose ratios of the mineralocorticoid antagonists spironolactone (100 mg and 200 mg daily) and canrenoate-K (200 mg daily) at steady state were defined in six healthy subjects with fludrecortisone as the mineralocorticoid agonist. The urine log 10 Na/K responses during spironolactone treatments were consistent with the law of mass action. The potency of canrenoate-K was 0.68 (95% C.L. 0.53 to 0.89) that of spironolactone on a weight basis. Approximately 72% of the renal antimineralocorticoid activity of spironolactone could attributed to the metabolite canrenone. The results at steady state are contrasted with those of a previously study comparing single doses of spironolactone and canrenoate-K.

PMID:
858213
[PubMed - indexed for MEDLINE]
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