[Investigations on the excretion of cefaclor in human bile (author's transl)].

The concentration of cefaclor in serum and bile was determined for up to 360 minutes after a single oral dose of 1 g cefaclor in 18 patients with continuous T-drainage of the bile duct. The rate of absorption varied, there being marked differences in the time. The peak bile concentration of 12.1 mcg/ml was reached after 120 min; the peak serum concentration of 12.3 mcg/ml, on the other hand, was reached after only 90 min. There was no accumulation of cefaclor in the bile.