Interactions of digoxin with nifedipine and diltiazem

Biological serum halt-life, relative volume of distribution and digoxin clearance following a single oral dose of digoxin with diltiazem or nifedipine were evaluated. Blood serum digoxin following its administration with diltiazem and nifedipine for 8 days were assayed. It was found that diltiazem and nifedipine did not affect tested pharmacokinetic parameters of digoxin and did not change digoxin serum levels during a 8-day administration in combination with diltiazem and nifedipine.