Human pharmacokinetics of iodixanol.
The pharmacokinetic properties of the x-ray contrast medium, iodixanol, a new nonionic dimer, were investigated in a phase I study including 40 healthy male volunteers. Iodixanol (300 mg I/mL) was administered intravenously (i.v.) at four dose levels--0.3, 0.6, 0.9, and 1.2 g iodine (I)/kg body weight--and saline was given as a control. 51Cr-EDTA was given concomitantly with iodixanol at all dose levels to study renal excretion of iodixanol. Mean half-lives were 26 and 131 minutes in the distribution and elimination phase, respectively. Apparent volume of distribution was 0.28 1/kg body weight, indicating distribution to extracellular fluid only. Within 24 hours after injection, 97% of the dose was excreted unmetabolized in the urine via glomerular filtration. The excretion in feces was 1.2% of the dose. The parameters calculated were independent of the given dose. The pharmacokinetics of iodixanol are comparable with those reported for other intravascular contrast media.[1]References
- Human pharmacokinetics of iodixanol. Svaland, M.G., Haider, T., Langseth-Manrique, K., Andrew, E., Hals, P.A. Investigative radiology. (1992) [Pubmed]
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