Pharmacokinetics and pharmacodynamics of clodronate disodium evaluated in plasma, synovial fluid and urine.

Summary

# Clodronate Pharmacokinetics in Equine Plasma, Synovial Fluid and Urine Clodronate, a non-nitrogenated bisphosphonate, has clinical applications in equine orthopaedic medicine, yet its behaviour in the horse's body—particularly regarding synovial penetration and renal handling—remained poorly characterised until this work. Krueger and colleagues administered clodronate to horses and measured drug concentrations across plasma, synovial fluid and urine whilst simultaneously monitoring renal function markers and urinary excretion patterns. The bisphosphonate demonstrated measurable concentrations in synovial fluid, indicating joint-space penetration, and was substantially excreted renally with no adverse effects on renal parameters observed during the study period. These findings provide essential pharmacokinetic data for practitioners selecting clodronate in orthopaedic cases, though the clinical relevance of achieved synovial concentrations requires further investigation, and long-term renal safety profiles in conditions of dehydration or underlying renal compromise remain an important consideration for future work.

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Key Findings

• •Study describes pharmacokinetics of clodronate disodium in plasma, synovial fluid, and urine following systemic administration in horses
• •First peer-reviewed report evaluating renal health indices and urinary excretion patterns in conjunction with clodronate administration
• •Clodronate achieves measurable concentrations in synovial fluid, relevant for intra-articular disease management

Conditions Studied

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