Pharmacokinetics of vinpocetine (Cavinton) in dog.

The pharmacokinetics of vinpocetine after 10 mg po and iv doses was studied in six beagle dogs treated in cross-over design. The concentration of the drug in plasma was determined by gas-liquid chromatography using N-P FID and capillary column. The elimination half-live and clearance values calculated from time plasma concentration data for iv administration were 8.9 +/- 2.87 h and 4.2 +/- 1.06 1/kg/h, respectively. The bioavailability of the drug was found to be 21.5 +/- 19.3%.