Pharmacokinetics of brodimoprim in serum and skin blister fluid

Following 400 mg brodimoprim given orally to 8 volunteers, the peaks of the mean concentration curves were 3.2 +/- 1.0 mg/l in serum and 1.0 +/- 0.2 mg/l (+/- SEM) in skin blister fluid. The terminal half-lives were 25.9 +/- 2.2 h and 42.2 +/- 6.5 h in serum and blister fluid, respectively. The area under the concentration-versus-time curve for blister fluid was 73% of serum value, and the mean recovery of bioactive drug in urine during 24 h was 3.4%. Considering the minimal inhibitory concentrations of potential target organisms and the slow elimination, the results suggest that brodimoprim may be useful in the treatment of infections, and that dosage once a day may be sufficient.