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Clin Pharmacol Ther. 1984 Aug;36(2):183-9.

The diltiazem-digoxin interaction.

Abstract

To study the interaction between the calcium antagonist diltiazem and digoxin, a randomized crossover trial under steady-state conditions was carried out in 24 healthy male subjects. Diltiazem with digoxin induced an average increase of steady-state plasma digoxin concentration and AUC over 48 hr of 22.4%. This is caused by the prolongation of elimination t1/2 from 36.2 +/- 11.2 to 44.5 +/- 11.5 hr (means +/- SD) and the impairment of total digoxin clearance, dropping from 146.6 +/- 37.9 to 107.9 +/- 18.4 ml/min. Average reduction in renal clearance (from 102.1 +/- 35.5 to 85.5 +/- 42.7 ml/min) was not statistically reproducible. Apparent volume of distribution was not relevantly altered. Diltiazem kinetics did not change significantly when digoxin was concurrently given.

PMID:
6744777
DOI:
10.1038/clpt.1984.160
[Indexed for MEDLINE]

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