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The pharmacokinetics and bioavailability of pamidronate were assessed in patients with breast cancer, 6 subjects received the drug intravenously and 7 orally. The initial plasma half-life of pamidronate was short (42±27 min) and the apparent total plasma clearance was high (471±298 ml/min). The renal clearance (74±34 ml/min) was similar to the creatinine clearance (66±19 ml/min). Most of the renal elimination occurred during and immediately post a 4 h infusion of the drug (23.2±7.9% in 24h). The non-renal clearance was ascribed to uptake by bone and deep tissue compartments. Little additional drug appeared in the urine after 24 h. The mean bioavailability was estimated using a parallel study design to be 0.3% for a 300 mg oral dose. © 1991 Springer-Verlag.

Original publication




Journal article


Calcified Tissue International

Publication Date





433 - 435