The pharmacokinetics of digoxin in patients with manifest hyperthyroidism and after normalization of thyroid function.

The pharmakokinetic data (elimination half-life, apparent distribution volume, total and renal clearance and cumulative urine excretion) were determined after intravenous administration of 1 mg digoxin in 9 female patients with an average age of 52 +/- 15 years with manifest hyperthyroidism. The study protocol was repeated after normalization of thyroid function by means of conventional thyrostatic therapy. Digoxin was determined by radioimmunoassay.