Influence of probenecid on P-amino hippurate kinetics.

The influence of probenecid on p-amino hippurate (PAH) kinetics was investigated in rat. Probenecid was administered i.p. (25, 50, 100, 150 and 200 mg/kg) two hours before PAH administration (25 mg/kg i.v.). The distribution and the rate of elimination of PAH was influenced by probenecid co-administration: the distribution decreased after probenecid doses higher than 150 mg/kg and the rate of elimination decreased after doses higher than 50 mg/kg.