The effect of dofetilide on the steady-state pharmacokinetics of digoxin wa
s evaluated in a randomized, double-blind study, Five days of dofetilide tr
eatment did not significantly affect steady-state pharmacokinetic variables
of digoxin compared with placebo; therefore, the use of dofetilide does no
t necessitate an adjustment in digoxin dose to maintain therapeutic digoxin
levels.